diff --git a/src/gui/editors/PianoRoll.cpp b/src/gui/editors/PianoRoll.cpp
index 0eb5df16343..33f9dae74ff 100644
--- a/src/gui/editors/PianoRoll.cpp
+++ b/src/gui/editors/PianoRoll.cpp
@@ -2810,9 +2810,11 @@ void PianoRoll::dragNotes( int x, int y, bool alt, bool shift, bool ctrl )
 			{
 				if (note->selected())
 				{
-					int newLength = note->oldLength() + off_ticks;
-					newLength = qMax(1, newLength);
-					note->setLength( MidiTime(newLength) );
+					int oldLength = note->oldLength();
+					int newLength = oldLength + off_ticks;
+					int minLength = qMin(oldLength,quantization());
+					newLength = qMax(alt ? 1 : minLength, newLength);
+					note->setLength(MidiTime(newLength));
 
 					m_lenOfNewNotes = note->length();
 				}