diff --git a/src/libzafl.c b/src/libzafl.c
index b2fdad44e64aa8c6c264197503b7ce4fe3ed5f8f..9f8a5fb7d2dd432a09bdfbed27939ada9b815609 100644
--- a/src/libzafl.c
+++ b/src/libzafl.c
@@ -93,7 +93,8 @@ static void zafl_setupSharedMemory()
 		else
 		{
 			PRINT_DEBUG("Success at mmap!");
-			assert(zafl_trace_map==shmat_addr);
+			if(shmat_addr!=0)
+				assert(zafl_trace_map==shmat_addr);
 		}
 
 		shared_memory_is_setup = 1;