diff --git a/src/Application/Application.cpp b/src/Application/Application.cpp
index a6d81e5..a1c5227 100644
--- a/src/Application/Application.cpp
+++ b/src/Application/Application.cpp
@@ -361,6 +361,29 @@ void Application::moveLayerDown(){
 	}
 }
 
+void Application::scaleUp(){
+	if(getSurfaceManager()->getSelectedSurface() != 0){
+		getCmdManager()->exec(
+		 new ScaleSurfaceFromToCmd(
+		  getSurfaceManager()->getSelectedSurface(),
+		  getSurfaceManager()->getSelectedSurface()->getScale(),
+		  getSurfaceManager()->getSelectedSurface()->getScale() + 0.2f));
+	}
+}
+
+void Application::scaleDown(){
+	if(getSurfaceManager()->getSelectedSurface() != 0){
+		if(getSurfaceManager()->getSelectedSurface()->getScale() <= 0.21f){
+			return;
+		}
+		getCmdManager()->exec(
+		 new ScaleSurfaceFromToCmd(
+		  getSurfaceManager()->getSelectedSurface(),
+		  getSurfaceManager()->getSelectedSurface()->getScale(),
+		  getSurfaceManager()->getSelectedSurface()->getScale() - 0.2f));
+	}
+}
+
 void Application::duplicateSurface(){
 	if(getSurfaceManager()->getSelectedSurface() != 0){
 		getCmdManager()->exec(
diff --git a/src/Application/Application.h b/src/Application/Application.h
index c117dce..82fed4f 100644
--- a/src/Application/Application.h
+++ b/src/Application/Application.h
@@ -22,6 +22,7 @@
 #include "DuplicateSurfaceCmd.h"
 #include "TogglePerspectiveCmd.h"
 #include "SetNextSourceCmd.h"
+#include "ScaleSurfaceFromToCmd.h"
 
 // Modes
 #include "ApplicationBaseMode.h"
@@ -93,6 +94,8 @@ class Application : public KeyListener {
 		void setSourceMode();
 		void moveLayerUp();
 		void moveLayerDown();
+		void scaleUp();
+		void scaleDown();
 		void duplicateSurface();
 		void setNextSource();
 	
diff --git a/src/Application/Modes/ProjectionMappingMode.cpp b/src/Application/Modes/ProjectionMappingMode.cpp
index 509a0f3..c967043 100644
--- a/src/Application/Modes/ProjectionMappingMode.cpp
+++ b/src/Application/Modes/ProjectionMappingMode.cpp
@@ -210,26 +210,11 @@ void ProjectionMappingMode::onKeyPressed(Application * app, ofKeyEventArgs & arg
 		 break;
 		 
 	 case '+': // Scale surface up
-		 if(app->getSurfaceManager()->getSelectedSurface() != 0){
-			app->getCmdManager()->exec(
-				new ScaleSurfaceFromToCmd(
-					app->getSurfaceManager()->getSelectedSurface(),
-					app->getSurfaceManager()->getSelectedSurface()->getScale(),
-					app->getSurfaceManager()->getSelectedSurface()->getScale() + 0.2f));
-		 }
+		 app->scaleUp();
 		 break;
 
 	 case '-': // Scale surface down
-		 if(app->getSurfaceManager()->getSelectedSurface() != 0){
-			if(app->getSurfaceManager()->getSelectedSurface()->getScale() <= 0.21f){
-				break;
-			}
-			app->getCmdManager()->exec(
-				new ScaleSurfaceFromToCmd(
-					app->getSurfaceManager()->getSelectedSurface(),
-					app->getSurfaceManager()->getSelectedSurface()->getScale(),
-					app->getSurfaceManager()->getSelectedSurface()->getScale() - 0.2f));
-		 }
+		 app->scaleDown();
 		 break;
 
 	 case 'l':
diff --git a/src/Application/Modes/ProjectionMappingMode.h b/src/Application/Modes/ProjectionMappingMode.h
index fcc99b4..e7e7cc7 100644
--- a/src/Application/Modes/ProjectionMappingMode.h
+++ b/src/Application/Modes/ProjectionMappingMode.h
@@ -19,7 +19,6 @@
 #include "StartDragSurfaceCmd.h"
 #include "DeselectSurfaceCmd.h"
 #include "ToggleAnimatedSourceCmd.h"
-#include "ScaleSurfaceFromToCmd.h"
 #include "MvSurfaceVertCmd.h"
 #include "SurfaceType.h"
 #include "Gui.h"
diff --git a/src/ofxPiMapper.cpp b/src/ofxPiMapper.cpp
index 74023ce..a8803f3 100644
--- a/src/ofxPiMapper.cpp
+++ b/src/ofxPiMapper.cpp
@@ -115,6 +115,14 @@ void ofxPiMapper::moveLayerDown(){
 	_application.moveLayerDown();
 }
 
+void ofxPiMapper::scaleUp(){
+	_application.scaleUp();
+}
+
+void ofxPiMapper::scaleDown(){
+	_application.scaleDown();
+}
+
 void ofxPiMapper::togglePauseForSurface(unsigned int i){
 	ofx::piMapper::BaseSource * s =
 		_application.getSurfaceManager()->getActivePreset()->getSurfaces().at(i)->getSource();
diff --git a/src/ofxPiMapper.h b/src/ofxPiMapper.h
index ecd0b7b..728e444 100644
--- a/src/ofxPiMapper.h
+++ b/src/ofxPiMapper.h
@@ -56,6 +56,8 @@ class ofxPiMapper {
 		void selectPrevVertex();
 		void moveLayerUp();
 		void moveLayerDown();
+		void scaleUp();
+		void scaleDown();
 		void togglePauseForSurface(unsigned int i);
 		void moveSelection(ofVec2f by);
 		void createSurface(ofx::piMapper::SurfaceType type);