diff --git a/lib/controller/controller.py b/lib/controller/controller.py
index 263c28276..e2df21bcf 100644
--- a/lib/controller/controller.py
+++ b/lib/controller/controller.py
@@ -31,6 +31,7 @@ from lib.core.common import getSafeExString
 from lib.core.common import hashDBRetrieve
 from lib.core.common import hashDBWrite
 from lib.core.common import intersect
+from lib.core.common import isDigit
 from lib.core.common import isListLike
 from lib.core.common import parseTargetUrl
 from lib.core.common import popValue
@@ -129,7 +130,7 @@ def _selectInjection():
         message += "[q] Quit"
         choice = readInput(message, default='0').upper()
 
-        if choice.isdigit() and int(choice) < len(kb.injections) and int(choice) >= 0:
+        if isDigit(choice) and int(choice) < len(kb.injections) and int(choice) >= 0:
             index = int(choice)
         elif choice == 'Q':
             raise SqlmapUserQuitException
diff --git a/lib/core/common.py b/lib/core/common.py
index 45cdfea5f..e2ced30fd 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -1245,6 +1245,22 @@ def isZipFile(filename):
 
     return openFile(filename, "rb", encoding=None).read(len(ZIP_HEADER)) == ZIP_HEADER
 
+def isDigit(value):
+    """
+    Checks if provided (string) value consists of digits (Note: Python's isdigit() is problematic)
+
+    >>> u'\xb2'.isdigit()
+    True
+    >>> isDigit(u'\xb2')
+    False
+    >>> isDigit('123456')
+    True
+    >>> isDigit('3b3')
+    False
+    """
+
+    return re.search(r"\A[0-9]+\Z", value or "") is not None
+
 def checkFile(filename, raiseOnError=True):
     """
     Checks for file existence and readability
diff --git a/lib/core/patch.py b/lib/core/patch.py
index e0f19baf2..60ac0ef10 100644
--- a/lib/core/patch.py
+++ b/lib/core/patch.py
@@ -20,6 +20,7 @@ import thirdparty.chardet.universaldetector
 
 from lib.core.common import filterNone
 from lib.core.common import getSafeExString
+from lib.core.common import isDigit
 from lib.core.common import isListLike
 from lib.core.common import readInput
 from lib.core.common import shellExec
@@ -62,6 +63,7 @@ def resolveCrossReferences():
     Place for cross-reference resolution
     """
 
+    lib.core.threads.isDigit = isDigit
     lib.core.threads.readInput = readInput
     lib.core.common.getPageTemplate = getPageTemplate
     lib.core.convert.filterNone = filterNone
diff --git a/lib/core/settings.py b/lib/core/settings.py
index b648114a7..316073349 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -18,7 +18,7 @@ from lib.core.enums import OS
 from thirdparty.six import unichr as _unichr
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.3.10.6"
+VERSION = "1.3.10.7"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)
diff --git a/lib/core/threads.py b/lib/core/threads.py
index e37b3b3bd..7b860d185 100644
--- a/lib/core/threads.py
+++ b/lib/core/threads.py
@@ -73,6 +73,10 @@ def readInput(message, default=None, checkBatch=True, boolean=False):
     # It will be overwritten by original from lib.core.common
     pass
 
+def isDigit(value):
+    # It will be overwritten by original from lib.core.common
+    pass
+
 def getCurrentThreadData():
     """
     Returns current thread's local data
@@ -125,10 +129,12 @@ def runThreads(numThreads, threadFunction, cleanupFunction=None, forwardExceptio
             choice = readInput(message, default=str(numThreads))
             if choice:
                 skipThreadCheck = False
+
                 if choice.endswith('!'):
                     choice = choice[:-1]
                     skipThreadCheck = True
-                if choice.isdigit():
+
+                if isDigit(choice):
                     if int(choice) > MAX_NUMBER_OF_THREADS and not skipThreadCheck:
                         errMsg = "maximum number of used threads is %d avoiding potential connection issues" % MAX_NUMBER_OF_THREADS
                         logger.critical(errMsg)
diff --git a/lib/request/inject.py b/lib/request/inject.py
index ffdeeb66a..a475eae9e 100644
--- a/lib/request/inject.py
+++ b/lib/request/inject.py
@@ -24,6 +24,7 @@ from lib.core.common import getTechniqueData
 from lib.core.common import hashDBRetrieve
 from lib.core.common import hashDBWrite
 from lib.core.common import initTechnique
+from lib.core.common import isDigit
 from lib.core.common import isNoneValue
 from lib.core.common import isNumPosStrValue
 from lib.core.common import isTechniqueAvailable
@@ -235,7 +236,7 @@ def _goInferenceProxy(expression, fromUser=False, batch=False, unpack=True, char
                             elif choice == 'Q':
                                 raise SqlmapUserQuitException
 
-                            elif choice.isdigit() and int(choice) > 0 and int(choice) <= count:
+                            elif isDigit(choice) and int(choice) > 0 and int(choice) <= count:
                                 stopLimit = int(choice)
 
                                 infoMsg = "sqlmap is now going to retrieve the "
@@ -246,7 +247,7 @@ def _goInferenceProxy(expression, fromUser=False, batch=False, unpack=True, char
                                 message = "how many? "
                                 stopLimit = readInput(message, default="10")
 
-                                if not stopLimit.isdigit():
+                                if not isDigit(stopLimit):
                                     errMsg = "invalid choice"
                                     logger.error(errMsg)
 
@@ -261,7 +262,7 @@ def _goInferenceProxy(expression, fromUser=False, batch=False, unpack=True, char
 
                                 return None
 
-                    elif count and not count.isdigit():
+                    elif count and not isDigit(count):
                         warnMsg = "it was not possible to count the number "
                         warnMsg += "of entries for the SQL query provided. "
                         warnMsg += "sqlmap will assume that it returns only "
diff --git a/lib/takeover/metasploit.py b/lib/takeover/metasploit.py
index 48fe9e305..18c7a5b84 100644
--- a/lib/takeover/metasploit.py
+++ b/lib/takeover/metasploit.py
@@ -23,6 +23,7 @@ from lib.core.common import dataToStdout
 from lib.core.common import Backend
 from lib.core.common import getLocalIP
 from lib.core.common import getRemoteIP
+from lib.core.common import isDigit
 from lib.core.common import normalizePath
 from lib.core.common import ntToPosixSlashes
 from lib.core.common import pollProcess
@@ -154,7 +155,7 @@ class Metasploit(object):
 
         choice = readInput(message, default="%d" % default)
 
-        if not choice or not choice.isdigit() or int(choice) > maxValue or int(choice) < 1:
+        if not choice or not isDigit(choice) or int(choice) > maxValue or int(choice) < 1:
             choice = default
 
         choice = int(choice)
@@ -241,7 +242,7 @@ class Metasploit(object):
                         elif Backend.isDbms(DBMS.MSSQL) and Backend.isVersionWithin(("2005", "2008")):
                             break
 
-                    elif not choice.isdigit():
+                    elif not isDigit(choice):
                         logger.warn("invalid value, only digits are allowed")
 
                     elif int(choice) < 1 or int(choice) > 2:
diff --git a/lib/takeover/udf.py b/lib/takeover/udf.py
index c8fbf0faa..2848d67ff 100644
--- a/lib/takeover/udf.py
+++ b/lib/takeover/udf.py
@@ -11,6 +11,7 @@ from lib.core.agent import agent
 from lib.core.common import Backend
 from lib.core.common import checkFile
 from lib.core.common import dataToStdout
+from lib.core.common import isDigit
 from lib.core.common import isStackingAvailable
 from lib.core.common import readInput
 from lib.core.common import unArrayizeValue
@@ -339,11 +340,9 @@ class UDF(object):
 
                 if choice == 'Q':
                     break
-                elif hasattr(choice, "isdigit") and choice.isdigit() and int(choice) > 0 and int(choice) <= len(udfList):
+                elif isDigit(choice) and int(choice) > 0 and int(choice) <= len(udfList):
                     choice = int(choice)
                     break
-                elif isinstance(choice, int) and choice > 0 and choice <= len(udfList):
-                    break
                 else:
                     warnMsg = "invalid value, only digits >= 1 and "
                     warnMsg += "<= %d are allowed" % len(udfList)
diff --git a/lib/takeover/web.py b/lib/takeover/web.py
index 0a583b7f8..a459e2cc9 100644
--- a/lib/takeover/web.py
+++ b/lib/takeover/web.py
@@ -22,6 +22,7 @@ from lib.core.common import getPublicTypeMembers
 from lib.core.common import getSQLSnippet
 from lib.core.common import getTechnique
 from lib.core.common import getTechniqueData
+from lib.core.common import isDigit
 from lib.core.common import isTechniqueAvailable
 from lib.core.common import isWindowsDriveLetterPath
 from lib.core.common import normalizePath
@@ -200,7 +201,7 @@ class Web(object):
         while True:
             choice = readInput(message, default=str(default))
 
-            if not choice.isdigit():
+            if not isDigit(choice):
                 logger.warn("invalid value, only digits are allowed")
 
             elif int(choice) < 1 or int(choice) > len(choices):
diff --git a/plugins/generic/takeover.py b/plugins/generic/takeover.py
index d1953923f..d3c32cbd4 100644
--- a/plugins/generic/takeover.py
+++ b/plugins/generic/takeover.py
@@ -9,6 +9,7 @@ import os
 
 from lib.core.common import Backend
 from lib.core.common import getSafeExString
+from lib.core.common import isDigit
 from lib.core.common import isStackingAvailable
 from lib.core.common import openFile
 from lib.core.common import readInput
@@ -101,7 +102,7 @@ class Takeover(Abstraction, Metasploit, ICMPsh, Registry):
             while True:
                 tunnel = readInput(msg, default='1')
 
-                if tunnel.isdigit() and int(tunnel) in (1, 2):
+                if isDigit(tunnel) and int(tunnel) in (1, 2):
                     tunnel = int(tunnel)
                     break
 
@@ -172,7 +173,7 @@ class Takeover(Abstraction, Metasploit, ICMPsh, Registry):
                     while True:
                         choice = readInput(msg, default='1')
 
-                        if choice.isdigit() and int(choice) in (1, 2):
+                        if isDigit(choice) and int(choice) in (1, 2):
                             choice = int(choice)
                             break