diff --git a/src/conf/capabilities.c b/src/conf/capabilities.c
index 87b60b0c3e..ac132f9ec4 100644
--- a/src/conf/capabilities.c
+++ b/src/conf/capabilities.c
@@ -23,6 +23,8 @@
 
 #include <config.h>
 
+#include <strings.h>
+
 #include "capabilities.h"
 #include "buf.h"
 #include "memory.h"