diff --git a/include/wlr/interfaces/wlr_keyboard.h b/include/wlr/interfaces/wlr_keyboard.h
index 6fbb3f68..4958e2b8 100644
--- a/include/wlr/interfaces/wlr_keyboard.h
+++ b/include/wlr/interfaces/wlr_keyboard.h
@@ -1,5 +1,5 @@
-#ifndef WLR_INTERFACE_WLR_KEYBOARD_H
-#define WLR_INTERFACE_WLR_KEYBOARD_H
+#ifndef WLR_INTERFACES_WLR_KEYBOARD_H
+#define WLR_INTERFACES_WLR_KEYBOARD_H
 
 #include <wlr/types/wlr_keyboard.h>
 #include <stdint.h>
diff --git a/include/wlr/interfaces/wlr_output.h b/include/wlr/interfaces/wlr_output.h
index 15a3a619..7ed19ed9 100644
--- a/include/wlr/interfaces/wlr_output.h
+++ b/include/wlr/interfaces/wlr_output.h
@@ -1,5 +1,5 @@
-#ifndef WLR_INTERFACE_WLR_OUTPUT_H
-#define WLR_INTERFACE_WLR_OUTPUT_H
+#ifndef WLR_INTERFACES_WLR_OUTPUT_H
+#define WLR_INTERFACES_WLR_OUTPUT_H
 
 #include <wlr/types/wlr_output.h>
 #include <stdbool.h>