diff --git a/include/nm-glib-compat.h b/include/nm-glib-compat.h
index da4e2c2ce0..741d610319 100644
--- a/include/nm-glib-compat.h
+++ b/include/nm-glib-compat.h
@@ -23,6 +23,7 @@
 
 #include <glib.h>
 #include <glib-object.h>
+#include <string.h>
 
 
 #ifdef __clang__