diff --git a/src/game/GameController.cpp b/src/game/GameController.cpp
index aede8d6ed..eab5dcc49 100644
--- a/src/game/GameController.cpp
+++ b/src/game/GameController.cpp
@@ -193,7 +193,7 @@ void GameController::AdjustBrushSize(int direction, bool logarithmic, bool xAxis
 	ui::Point newSize(0, 0);
 	ui::Point oldSize = gameModel->GetBrush()->GetRadius();
 	if(logarithmic)
-		newSize = gameModel->GetBrush()->GetRadius() + ui::Point(direction * ((gameModel->GetBrush()->GetRadius().X/10)>0?gameModel->GetBrush()->GetRadius().X/10:1), direction * ((gameModel->GetBrush()->GetRadius().Y/10)>0?gameModel->GetBrush()->GetRadius().Y/10:1));
+		newSize = gameModel->GetBrush()->GetRadius() + ui::Point(direction * ((gameModel->GetBrush()->GetRadius().X/5)>0?gameModel->GetBrush()->GetRadius().X/5:1), direction * ((gameModel->GetBrush()->GetRadius().Y/5)>0?gameModel->GetBrush()->GetRadius().Y/5:1));
 	else
 		newSize = gameModel->GetBrush()->GetRadius() + ui::Point(direction, direction);
 	if(newSize.X<0)
diff --git a/src/game/GameView.cpp b/src/game/GameView.cpp
index 5c4ecee04..610e3ca73 100644
--- a/src/game/GameView.cpp
+++ b/src/game/GameView.cpp
@@ -909,6 +909,7 @@ void GameView::OnKeyPress(int key, Uint16 character, bool shift, bool ctrl, bool
 	{
 	case KEY_ALT:
 		drawSnap = true;
+		enableAltBehaviour();
 		break;
 	case KEY_CTRL:
 		if(drawModeReset)
@@ -989,10 +990,10 @@ void GameView::OnKeyPress(int key, Uint16 character, bool shift, bool ctrl, bool
 		c->OpenStamps();
 		break;
 	case ']':
-		c->AdjustBrushSize(1, true, shiftBehaviour, ctrlBehaviour);
+		c->AdjustBrushSize(1, !alt, shiftBehaviour, ctrlBehaviour);
 		break;
 	case '[':
-		c->AdjustBrushSize(-1, true, shiftBehaviour, ctrlBehaviour);
+		c->AdjustBrushSize(-1, !alt, shiftBehaviour, ctrlBehaviour);
 		break;
 	}
 
@@ -1019,6 +1020,7 @@ void GameView::OnKeyRelease(int key, Uint16 character, bool shift, bool ctrl, bo
 	{
 	case KEY_ALT:
 		drawSnap = false;
+		disableAltBehaviour();
 		break;
 	case KEY_CTRL:
 		disableCtrlBehaviour();
@@ -1264,6 +1266,22 @@ void GameView::disableShiftBehaviour()
 	}
 }
 
+void GameView::enableAltBehaviour()
+{
+	if(!altBehaviour)
+	{
+		altBehaviour = true;
+	}
+}
+
+void GameView::disableAltBehaviour()
+{
+	if(altBehaviour)
+	{
+		altBehaviour = false;
+	}
+}
+
 void GameView::enableCtrlBehaviour()
 {
 	if(!ctrlBehaviour)
diff --git a/src/game/GameView.h b/src/game/GameView.h
index 9db25f414..b9c060434 100644
--- a/src/game/GameView.h
+++ b/src/game/GameView.h
@@ -40,6 +40,7 @@ private:
 	bool drawSnap;
 	bool shiftBehaviour;
 	bool ctrlBehaviour;
+	bool altBehaviour;
 	bool showHud;
 	int toolIndex;
 
@@ -109,6 +110,8 @@ private:
 	void disableShiftBehaviour();
 	void enableCtrlBehaviour();
 	void disableCtrlBehaviour();
+	void enableAltBehaviour();
+	void disableAltBehaviour();
 public:
     GameView();