diff --git a/include/ui/eventfilters.h b/include/ui/eventfilters.h
index 984ce23a..851c344b 100644
--- a/include/ui/eventfilters.h
+++ b/include/ui/eventfilters.h
@@ -3,6 +3,7 @@
 
 
 
+/// Prevent wheel scroll
 class WheelFilter : public QObject {
     Q_OBJECT
 public:
@@ -10,3 +11,18 @@ public:
     virtual ~WheelFilter() {}
     bool eventFilter(QObject *obj, QEvent *event) override;
 };
+
+
+
+/// Ctrl+Wheel = zoom
+class MapSceneEventFilter : public QObject {
+    Q_OBJECT
+protected:
+    bool eventFilter(QObject *obj, QEvent *event) override;
+public:
+    explicit MapSceneEventFilter(QObject *parent = nullptr) : QObject(parent) {}
+
+signals:
+    void wheelZoom(int delta);
+public slots:
+};
diff --git a/include/ui/mapsceneeventfilter.h b/include/ui/mapsceneeventfilter.h
deleted file mode 100644
index 7de427e3..00000000
--- a/include/ui/mapsceneeventfilter.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef MAPSCENEEVENTFILTER_H
-#define MAPSCENEEVENTFILTER_H
-
-#include <QObject>
-
-class MapSceneEventFilter : public QObject
-{
-    Q_OBJECT
-protected:
-    bool eventFilter(QObject *obj, QEvent *event) override;
-public:
-    explicit MapSceneEventFilter(QObject *parent = nullptr);
-
-signals:
-    void wheelZoom(int delta);
-public slots:
-};
-
-#endif // MAPSCENEEVENTFILTER_H
diff --git a/porymap.pro b/porymap.pro
index 04fc6e00..bf9a200f 100644
--- a/porymap.pro
+++ b/porymap.pro
@@ -66,7 +66,6 @@ SOURCES += src/core/block.cpp \
     src/ui/prefabcreationdialog.cpp \
     src/ui/regionmappixmapitem.cpp \
     src/ui/citymappixmapitem.cpp \
-    src/ui/mapsceneeventfilter.cpp \
     src/ui/metatilelayersitem.cpp \
     src/ui/metatileselector.cpp \
     src/ui/movablerect.cpp \
@@ -158,7 +157,6 @@ HEADERS  += include/core/block.h \
     include/ui/prefabcreationdialog.h \
     include/ui/regionmappixmapitem.h \
     include/ui/citymappixmapitem.h \
-    include/ui/mapsceneeventfilter.h \
     include/ui/metatilelayersitem.h \
     include/ui/metatileselector.h \
     include/ui/movablerect.h \
diff --git a/src/editor.cpp b/src/editor.cpp
index fc77b2b6..48b8ce4e 100644
--- a/src/editor.cpp
+++ b/src/editor.cpp
@@ -4,7 +4,7 @@
 #include "log.h"
 #include "mapconnection.h"
 #include "currentselectedmetatilespixmapitem.h"
-#include "mapsceneeventfilter.h"
+#include "eventfilters.h"
 #include "metatile.h"
 #include "montabwidget.h"
 #include "encountertablemodel.h"
diff --git a/src/project.cpp b/src/project.cpp
index 245f3fb8..f2615ebf 100644
--- a/src/project.cpp
+++ b/src/project.cpp
@@ -1376,12 +1376,6 @@ void Project::updateLayout(Layout *layout) {
         mapLayoutsTableMaster.append(layout->id);
     }
 
-    // !TODO: why is[was] this a deep copy??
-    // Deep copy
-    // Layout *layout = mapLayouts.value(map->layoutId);
-    // Layout *newLayout = new Layout();
-    // *newLayout = *layout;
-    // mapLayoutsMaster.insert(map->layoutId, newLayout);
     if (mapLayoutsMaster.contains(layout->id)) {
         mapLayoutsMaster[layout->id]->copyFrom(layout);
     }
diff --git a/src/ui/eventfilters.cpp b/src/ui/eventfilters.cpp
index 24f2e0bd..1e7b2b80 100644
--- a/src/ui/eventfilters.cpp
+++ b/src/ui/eventfilters.cpp
@@ -1,5 +1,7 @@
 #include "eventfilters.h"
 
+#include <QGraphicsSceneWheelEvent>
+
 
 
 bool WheelFilter::eventFilter(QObject *, QEvent *event) {
@@ -8,3 +10,17 @@ bool WheelFilter::eventFilter(QObject *, QEvent *event) {
     }
     return false;
 }
+
+
+
+bool MapSceneEventFilter::eventFilter(QObject*, QEvent *event) {
+    if (event->type() == QEvent::GraphicsSceneWheel) {
+        QGraphicsSceneWheelEvent *wheelEvent = static_cast<QGraphicsSceneWheelEvent *>(event);
+        if (wheelEvent->modifiers() & Qt::ControlModifier) {
+            emit wheelZoom(wheelEvent->delta() > 0 ? 1 : -1);
+            event->accept();
+            return true;
+        }
+    }
+    return false;
+}
diff --git a/src/ui/mapsceneeventfilter.cpp b/src/ui/mapsceneeventfilter.cpp
deleted file mode 100644
index f8ae14cb..00000000
--- a/src/ui/mapsceneeventfilter.cpp
+++ /dev/null
@@ -1,23 +0,0 @@
-#include "mapsceneeventfilter.h"
-#include <QEvent>
-#include <QGraphicsSceneWheelEvent>
-
-MapSceneEventFilter::MapSceneEventFilter(QObject *parent) : QObject(parent)
-{
-
-}
-
-bool MapSceneEventFilter::eventFilter(QObject*, QEvent *event)
-{
-    if (event->type() == QEvent::GraphicsSceneWheel)
-    {
-        QGraphicsSceneWheelEvent *wheelEvent = static_cast<QGraphicsSceneWheelEvent *>(event);
-        if (wheelEvent->modifiers() & Qt::ControlModifier)
-        {
-            emit wheelZoom(wheelEvent->delta() > 0 ? 1 : -1);
-            event->accept();
-            return true;
-        }
-    }
-    return false;
-}