diff --git a/src/wayland/meta-wayland-keyboard.c b/src/wayland/meta-wayland-keyboard.c
index 8d136c9b9..c4836cb7b 100644
--- a/src/wayland/meta-wayland-keyboard.c
+++ b/src/wayland/meta-wayland-keyboard.c
@@ -485,7 +485,8 @@ meta_wayland_keyboard_update_key_state (MetaWaylandKeyboard *keyboard,
 {
   gboolean mods_changed = FALSE;
 
-  for (gint i = offset; i < key_vector_len * 8; i++)
+  int i;
+  for (i = offset; i < key_vector_len * 8; i++)
     {
       gboolean set = (key_vector[i/8] & (1 << (i % 8))) != 0;