diff --git a/portable/MemMang/heap_3.c b/portable/MemMang/heap_3.c
index 8ed3d1b4f..671705bf5 100644
--- a/portable/MemMang/heap_3.c
+++ b/portable/MemMang/heap_3.c
@@ -82,7 +82,7 @@ void * pvPortMalloc( size_t xWantedSize )
 
 void vPortFree( void * pv )
 {
-    if( pv )
+    if( pv != NULL )
     {
         vTaskSuspendAll();
         {