diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index bfb22fd2f..1c55f0a8d 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -1274,6 +1274,7 @@ void FurnaceGUI::valueInput(int num, bool direct, int target) {
     } else {
       if (e->getMaxVolumeChan(cursor.xCoarse)<16) {
         curNibble=false;
+        if (pat->data[cursor.y][target]>e->getMaxVolumeChan(cursor.xCoarse)) pat->data[cursor.y][target]=e->getMaxVolumeChan(cursor.xCoarse);
         editAdvance();
       } else {
         curNibble=!curNibble;