diff --git a/modules/material_maker/editor/widgets/tones_editor/tones_editor.cpp b/modules/material_maker/editor/widgets/tones_editor/tones_editor.cpp
index 930a21a4d..074ac1670 100644
--- a/modules/material_maker/editor/widgets/tones_editor/tones_editor.cpp
+++ b/modules/material_maker/editor/widgets/tones_editor/tones_editor.cpp
@@ -215,7 +215,7 @@ MMTonesEditor::MMTonesEditor() {
 	*/
 
 	_histogram_tr = memnew(TextureRect);
-	_histogram_tr->set_custom_minimum_size(Vector2(0, 100));
+	_histogram_tr->set_custom_minimum_size(Vector2(128, 128));
 	_histogram_tr->set_h_size_flags(Control::SIZE_EXPAND_FILL);
 	add_child(_histogram_tr);
 
diff --git a/modules/material_maker/editor/widgets/tones_editor/tones_editor.h b/modules/material_maker/editor/widgets/tones_editor/tones_editor.h
index 451fd542b..d0a004d65 100644
--- a/modules/material_maker/editor/widgets/tones_editor/tones_editor.h
+++ b/modules/material_maker/editor/widgets/tones_editor/tones_editor.h
@@ -24,7 +24,7 @@ public:
 	};
 
 	enum {
-		HISTOGRAM_IMAGE_SIZE = 256,
+		HISTOGRAM_IMAGE_SIZE = 128,
 	};
 
 	void set_value(const Ref<MMTones> &v);