diff --git a/src/plugins/c_api.c b/src/plugins/c_api.c
index d70d4559..066f0f56 100644
--- a/src/plugins/c_api.c
+++ b/src/plugins/c_api.c
@@ -33,6 +33,7 @@
  */
 
 #include <stdlib.h>
+#include <string.h>
 #include <glib.h>
 
 #include "log.h"