From 9e314e19d98bfb952c5fb1eb216fa97d0e95179f Mon Sep 17 00:00:00 2001
From: Matthew Stewart
Date: Fri, 25 May 2018 21:53:18 -0400
Subject: STARTREK: Demon2, half of Demon3 done

---
 engines/startrek/graphics.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'engines/startrek/graphics.cpp')

diff --git a/engines/startrek/graphics.cpp b/engines/startrek/graphics.cpp
index 2e289514f0..a5b2b7bc71 100644
--- a/engines/startrek/graphics.cpp
+++ b/engines/startrek/graphics.cpp
@@ -493,6 +493,8 @@ void Graphics::drawAllSprites(bool updateScreen) {
 	// Redraw the background on every dirty rectangle
 	for (int i = 0; i < numDirtyRects; i++) {
 		Common::Rect &r = dirtyRects[i];
+		if (r.width() == 0 || r.height() == 0)
+			continue;
 
 		int offset = r.top * SCREEN_WIDTH + r.left;
 		_vm->_system->copyRectToScreen(_backgroundImage->pixels+offset, SCREEN_WIDTH, r.left, r.top, r.width(), r.height());
-- 
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