diff --git a/scenes/tilemap/tilemap.gd b/scenes/tilemap/tilemap.gd
index 272e059b..244f6eb8 100644
--- a/scenes/tilemap/tilemap.gd
+++ b/scenes/tilemap/tilemap.gd
@@ -771,19 +771,19 @@ func zoom_out() -> void:
 
 
 func _on_zoom_plus_button_down() -> void:
-    zoom_action = "in"
+    zoom_action = 'in'
     perform_zoom()
     zoom_timer.start(0.3)
 
 
 func _on_zoom_minus_button_down() -> void:
-    zoom_action = "out"
+    zoom_action = 'out'
     perform_zoom()
     zoom_timer.start(0.3)
 
 
 func _on_zoom_button_up() -> void:
-    zoom_action = ""
+    zoom_action = ''
     zoom_timer.stop()
 
 
@@ -793,8 +793,8 @@ func _on_zoom_timeout():
 
 
 func perform_zoom():
-    if zoom_action != "":
-        if zoom_action == "in":
+    if zoom_action != '':
+        if zoom_action == 'in':
             zoom_in()
         else:
             zoom_out()