diff --git a/tools/flask/utils/loadpolicy.c b/tools/flask/utils/loadpolicy.c
index 2edcf97c62..47b5139e52 100644
--- a/tools/flask/utils/loadpolicy.c
+++ b/tools/flask/utils/loadpolicy.c
@@ -61,7 +61,7 @@ int main (int argCnt, const char *args[])
 
 #ifdef USE_MMAP
     polMem = mmap(NULL, info.st_size, PROT_READ, MAP_SHARED, polFd, 0);
-    if ( !polMem )
+    if ( polMem == MAP_FAILED )
     {
         fprintf(stderr, "Error occurred mapping policy file in memory: %s\n",
                 strerror(errno));