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-rw-r--r--src/client/guiscalingfilter.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/client/guiscalingfilter.h b/src/client/guiscalingfilter.h
index 4661bf8da..a5cd78511 100644
--- a/src/client/guiscalingfilter.h
+++ b/src/client/guiscalingfilter.h
@@ -23,7 +23,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
/* Manually insert an image into the cache, useful to avoid texture-to-image
* conversion whenever we can intercept it.
*/
-void guiScalingCache(io::path key, video::IVideoDriver *driver, video::IImage *value);
+void guiScalingCache(const io::path &key, video::IVideoDriver *driver, video::IImage *value);
// Manually clear the cache, e.g. when switching to different worlds.
void guiScalingCacheClear();