diff --git a/control.cpp b/control.cpp
index f6e738a4..fd68dc42 100644
--- a/control.cpp
+++ b/control.cpp
@@ -26,6 +26,7 @@ EX bool holdmouse;
 EX int getcstat, lgetcstat;
 EX ld getcshift;
 EX bool inslider;
+EX bool invslider;
 EX int slider_x;
 
 EX function <void(int sym, int uni)> keyhandler = [] (int sym, int uni) {};
@@ -1113,6 +1114,7 @@ EX void handle_event(SDL_Event& ev) {
       which_pointer = 0;
       bool was_holdmouse = holdmouse;
       holdmouse = false;
+      invslider = false;
       
       bool down = ev.type == SDL_MOUSEBUTTONDOWN SDL12(, || ev.type == SDL_MOUSEWHEEL);
       bool up = ev.type == SDL_MOUSEBUTTONUP;