diff --git a/rtgui/thumbnail.cc b/rtgui/thumbnail.cc
index 1365117d7..0ae78dd62 100644
--- a/rtgui/thumbnail.cc
+++ b/rtgui/thumbnail.cc
@@ -899,7 +899,7 @@ void Thumbnail::_saveThumbnail ()
         return;
     }
 
-    g_remove (getCacheFileName ("images", ".rtti").c_str ()));
+    g_remove (getCacheFileName ("images", ".rtti").c_str ());
 
     // save thumbnail image
     tpp->writeImage (getCacheFileName ("images", ""));