diff --git a/src/raster/sprite.cpp b/src/raster/sprite.cpp
index cf39c158e..15a3de3d0 100644
--- a/src/raster/sprite.cpp
+++ b/src/raster/sprite.cpp
@@ -841,6 +841,7 @@ void SpriteImpl::resetPalettes()
     while (it != end) {
       delete *it;		// palette
       it = m_palettes.erase(it);
+      end = m_palettes.end();
     }
   }
 }