diff --git a/src/gui_gtk_x11.c b/src/gui_gtk_x11.c
index 40de666..341db3d 100644
--- a/src/gui_gtk_x11.c
+++ b/src/gui_gtk_x11.c
@@ -1254,11 +1254,16 @@
 	add_to_input_buf(string2, 3);
     }
 
-    if (len == 1 && ((string[0] == Ctrl_C && ctrl_c_interrupts)
-		   || (string[0] == intr_char && intr_char != Ctrl_C)))
+    // Check if the key interrupts.
     {
-	trash_input_buf();
-	got_int = TRUE;
+	int int_ch = check_for_interrupt(key, modifiers);
+
+	if (int_ch != NUL)
+	{
+	    trash_input_buf();
+	    string[0] = int_ch;
+	    len = 1;
+	}
     }
 
     add_to_input_buf(string, len);