diff --git a/src/gui/waveEdit.cpp b/src/gui/waveEdit.cpp
index 888e53055..b6a86719c 100644
--- a/src/gui/waveEdit.cpp
+++ b/src/gui/waveEdit.cpp
@@ -1107,6 +1107,7 @@ void FurnaceGUI::drawWaveEdit() {
                     }
                     MARK_MODIFIED;
                   });
+                  e->notifyWaveChange(curWave);
                 }
                 ImGui::SameLine();
                 if (ImGui::Button(_("Reverse"),buttonSizeHalf)) {