diff --git a/src/game/Level3.cpp b/src/game/Level3.cpp
index 0b9a21aaa..2253ab34c 100644
--- a/src/game/Level3.cpp
+++ b/src/game/Level3.cpp
@@ -5960,8 +5960,11 @@ bool ChatHandler::HandleInstanceUnbindCommand(const char* args)
     uint32 mapid = 0;
     bool got_map = false;
 
-    if (args != "all")
+    if (strncmp(args,"all",strlen(args)) != 0)
     {
+        if(!isNumeric(args[0]))
+            return false;
+
         got_map = true;
         mapid = atoi(args);
     }
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 51b1be8ca..e407a9a9b 100644
--- a/src/shared/revision_nr.h
+++ b/src/shared/revision_nr.h
@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "8710"
+ #define REVISION_NR "8711"
 #endif // __REVISION_NR_H__