diff --git a/usr.sbin/lmcconfig/lmcconfig.c b/usr.sbin/lmcconfig/lmcconfig.c
index 7fbc2168e1ec..f720e634f8ff 100644
--- a/usr.sbin/lmcconfig/lmcconfig.c
+++ b/usr.sbin/lmcconfig/lmcconfig.c
@@ -2008,7 +2008,7 @@ load_xilinx(char *name)
   int c;
 
   if (verbose) printf("Load firmware from file %s...\n", name);
-  if ((f = fopen(name, "r")) == 0)
+  if ((f = fopen(name, "r")) == NULL)
     {
     perror("Failed to open file");
     exit(1);