diff --git a/main.cpp b/main.cpp
index 66bded7..7f5b1dd 100755
--- a/main.cpp
+++ b/main.cpp
@@ -22,6 +22,11 @@ bool muted[4] = { false, false, false, false };
 int selected_channel = 0;
 int selected_row = 0;
 int selected_part = 0;
+
+int selected_channel_end = -1;
+int selected_row_end = -1;
+int selected_part_end = -1;
+
 int scroll = 0;
 int base_octave = 4;
 int current_instrument = 0;
@@ -136,6 +141,7 @@ int main(int argc, char* argv[]) {
             if (sdlEvent.type == SDL_MOUSEBUTTONDOWN) {
                 if (sdlEvent.button.button == SDL_BUTTON_LEFT) {
                     if ((sdlEvent.button.x >= 13) && (sdlEvent.button.x <= 149) && (sdlEvent.button.y >= 14) && (sdlEvent.button.y <= 239) ) {
+                        selected_channel_end = -1;
                         selected_row = scroll + int((sdlEvent.button.y-14)/7);
                         selected_channel = (sdlEvent.button.x-13)/35;
                         int part_pos = (sdlEvent.button.x-13)-(selected_channel*35);