diff --git a/eek/eek-keyboard.h b/eek/eek-keyboard.h
index af4c68af..b0eb6ec7 100644
--- a/eek/eek-keyboard.h
+++ b/eek/eek-keyboard.h
@@ -66,7 +66,7 @@ struct squeek_button *eek_keyboard_find_button_by_name(LevelKeyboard *keyboard,
 
 /// Represents the path to the button within a view
 struct button_place {
-    struct squeek_row *row;
+    const struct squeek_row *row;
     const struct squeek_button *button;
 };
 
diff --git a/src/layout.h b/src/layout.h
index dc2b9661..95634dbf 100644
--- a/src/layout.h
+++ b/src/layout.h
@@ -16,7 +16,7 @@ struct squeek_button *squeek_row_create_button (struct squeek_row *row,
 struct squeek_button *squeek_row_create_button_with_state(struct squeek_row *row,
                                     struct squeek_button *source);
 void squeek_row_set_angle(struct squeek_row *row, int32_t angle);
-int32_t squeek_row_get_angle(struct squeek_row*);
+int32_t squeek_row_get_angle(const struct squeek_row*);
 
 EekBounds squeek_row_get_bounds(const struct squeek_row*);
 void squeek_row_set_bounds(struct squeek_row* row, EekBounds bounds);