diff --git a/src/misc.c b/src/misc.c
index f353b058..57203aeb 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -41,6 +41,10 @@
 #include "misc.h"
 #include "blf.h"
 
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif