diff --git a/contrib/splitfont.c b/contrib/splitfont.c
index f27c5b99..d8715bfe 100644
--- a/contrib/splitfont.c
+++ b/contrib/splitfont.c
@@ -2,6 +2,8 @@
 /* this is for iso fonts, no psf header, just 256 characters */
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <sys/stat.h>