diff --git a/DMRAccessControl.cpp b/DMRAccessControl.cpp
index 121fc45..eed6597 100644
--- a/DMRAccessControl.cpp
+++ b/DMRAccessControl.cpp
@@ -55,8 +55,8 @@ bool CDMRAccessControl::validateSrcId(unsigned int id)
 		return false;
 
 	unsigned int prefix = id / 10000U;
-	if (prefix == 0U || prefix > 999U)
-		return false;
+//	if (prefix == 0U || prefix > 999U)
+//		return false;
 
 	if (!m_prefixes.empty()) {
 		bool ret = std::find(m_prefixes.begin(), m_prefixes.end(), prefix) == m_prefixes.end();