diff --git a/aegisub/visual_tool_rotatexy.cpp b/aegisub/visual_tool_rotatexy.cpp
index c31129bde..73a6ac2be 100644
--- a/aegisub/visual_tool_rotatexy.cpp
+++ b/aegisub/visual_tool_rotatexy.cpp
@@ -198,9 +198,17 @@ void VisualToolRotateXY::UpdateHold() {
 	float screenAngleX = (orgy-mouseY*sh/h)*2.0;
 	float screenAngleY = (mouseX*sw/w-orgx)*2.0;
 
+	// Deltas
+	float deltaX = screenAngleX - startAngleX;
+	float deltaY = screenAngleY - startAngleY;
+	if (ctrlDown) {
+		if (fabs(deltaX) >= fabs(deltaY)) deltaY = 0;
+		else deltaX = 0;
+	}
+
 	// Calculate
-	curAngleX = screenAngleX - startAngleX + origAngleX;
-	curAngleY = screenAngleY - startAngleY + origAngleY;
+	curAngleX = deltaX + origAngleX;
+	curAngleY = deltaY + origAngleY;
 	while (curAngleX < 0.0) curAngleX += 360.0;
 	while (curAngleX >= 360.0) curAngleX -= 360.0;
 	while (curAngleY < 0.0) curAngleY += 360.0;
diff --git a/aegisub/visual_tool_scale.cpp b/aegisub/visual_tool_scale.cpp
index 29fed54d9..9f38260e2 100644
--- a/aegisub/visual_tool_scale.cpp
+++ b/aegisub/visual_tool_scale.cpp
@@ -151,9 +151,17 @@ void VisualToolScale::InitializeHold() {
 ///////////////
 // Update hold
 void VisualToolScale::UpdateHold() {
+	// Deltas
+	int deltaX = mouseX - startX;
+	int deltaY = startY - mouseY;
+	if (ctrlDown) {
+		if (abs(deltaX) >= abs(deltaY)) deltaY = 0;
+		else deltaX = 0;
+	}
+
 	// Calculate
-	curScaleX = (float(mouseX - startX)/0.8f) + origScaleX;
-	curScaleY = (float(startY - mouseY)/0.8f) + origScaleY;
+	curScaleX = (float(deltaX)/0.8f) + origScaleX;
+	curScaleY = (float(deltaY)/0.8f) + origScaleY;
 	if (curScaleX < 0.0f) curScaleX = 0.0f;
 	if (curScaleY < 0.0f) curScaleY = 0.0f;