diff --git a/src/nice.c b/src/nice.c
index 3566678a4..acf636468 100644
--- a/src/nice.c
+++ b/src/nice.c
@@ -30,8 +30,8 @@
 
 #include <stdio.h>
 
+#define NDEBUG
 #include <assert.h>
-/* FIXME: define NDEBUG here.  */
 
 #include <getopt.h>
 #include <sys/types.h>