diff --git a/PowerEditor/src/MISC/Common/Common.h b/PowerEditor/src/MISC/Common/Common.h
index 88834967a..d42e16f18 100644
--- a/PowerEditor/src/MISC/Common/Common.h
+++ b/PowerEditor/src/MISC/Common/Common.h
@@ -116,7 +116,7 @@ protected:
 	class StringBuffer {
 	public:
 		StringBuffer() : _str(0), _allocLen(0) { }
-		~StringBuffer() { if(_str) delete [] _str; }
+		~StringBuffer() { if(_allocLen) delete [] _str; }
 
 		void sizeTo(size_t size) {
 			if(_allocLen < size)