diff --git a/part12-wgt/examples/wgt18.c b/part12-wgt/examples/wgt18.c
index 10359ce..4dc53d9 100644
--- a/part12-wgt/examples/wgt18.c
+++ b/part12-wgt/examples/wgt18.c
@@ -86,7 +86,7 @@ void wgt18()
     /* copy the whole screen */
     /* notice how we never use wnormscreen at all! */
 
-  } while (1);
+  } while (but == 0);
 
   mdeinit();
   wfreeblock (screen1);
diff --git a/part12-wgt/examples/wgt19.c b/part12-wgt/examples/wgt19.c
index 8ee962a..f0a6c71 100644
--- a/part12-wgt/examples/wgt19.c
+++ b/part12-wgt/examples/wgt19.c
@@ -88,15 +88,15 @@ void wgt19()
 
     wcopyscreen (0, 0, 160, 199, screen1, 0, 0, NULL);  /* copy half the screen */
 
-    if (mx == 0)  /* Show the next sprite */
+    if (but == 1)  /* Show the next sprite */
       {
        sp++;
        if (sp > 9)
 	 sp = 1;
-       //noclick ();
+       noclick ();
       }
 
-  } while (1);
+  } while (but != 2);
 
   msetbounds (0, 0, 319, 199);
   mdeinit ();                   /* Deinitialize the mouse handler */
diff --git a/part12-wgt/examples/wgt60.c b/part12-wgt/examples/wgt60.c
index ea59a8b..766dc72 100644
--- a/part12-wgt/examples/wgt60.c
+++ b/part12-wgt/examples/wgt60.c
@@ -126,7 +126,7 @@ void wgt60()
 
   do {                          /* Now play the game */
     looper ();
-  } while (1);			/* Until the right mouse button is clicked */
+  } while (but != 2);			/* Until the right mouse button is clicked */
 
   mdeinit();
   deinitialize_sprites ();      /* Deinit the sprite system */