diff --git a/src/libdecor-plugin.h b/src/libdecor-plugin.h
index ba80ce6..59199dd 100644
--- a/src/libdecor-plugin.h
+++ b/src/libdecor-plugin.h
@@ -132,12 +132,6 @@ struct libdecor_plugin_interface {
 struct wl_surface *
 libdecor_frame_get_wl_surface(struct libdecor_frame *frame);
 
-int
-libdecor_frame_get_content_width(struct libdecor_frame *frame);
-
-int
-libdecor_frame_get_content_height(struct libdecor_frame *frame);
-
 enum libdecor_window_state
 libdecor_frame_get_window_state(struct libdecor_frame *frame);
 
diff --git a/src/libdecor.h b/src/libdecor.h
index af67e2f..b5eba41 100644
--- a/src/libdecor.h
+++ b/src/libdecor.h
@@ -532,6 +532,12 @@ bool
 libdecor_configuration_get_window_state(struct libdecor_configuration *configuration,
 					enum libdecor_window_state *window_state);
 
+int
+libdecor_frame_get_content_width(struct libdecor_frame *frame);
+
+int
+libdecor_frame_get_content_height(struct libdecor_frame *frame);
+
 #ifdef __cplusplus
 }
 #endif