diff --git a/src/logger.c b/src/logger.c
index c801093a..6d7ae1f3 100644
--- a/src/logger.c
+++ b/src/logger.c
@@ -25,6 +25,7 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <stdarg.h>
+#include <stdlib.h>
 #include <string.h>
 #include <time.h>
 #include <errno.h>