diff --git a/gfx/drivers_context/x_ctx.c b/gfx/drivers_context/x_ctx.c
index 30923add44..f2dbe67148 100644
--- a/gfx/drivers_context/x_ctx.c
+++ b/gfx/drivers_context/x_ctx.c
@@ -37,6 +37,7 @@
 #endif
 
 #include <string/stdstring.h>
+#include <compat/strcasestr.h>
 #include <X11/Xatom.h>
 
 #include "../../configuration.h"