diff --git a/c/xlib/display.c b/c/xlib/display.c
index 5817923..55c2302 100644
--- a/c/xlib/display.c
+++ b/c/xlib/display.c
@@ -55,7 +55,9 @@ s48_value scx_general_after_function_binding = S48_FALSE;
 static int scx_after_function_wrapper(Display* dpy) {
   s48_value display = scx_enter_display(dpy);
   s48_value fun = S48_SHARED_BINDING_REF(scx_general_after_function_binding);
+  s48_disable_interruptsB();
   s48_call_scheme(fun, 1, display);
+  s48_enable_interruptsB();
   return 0;
 }