diff --git a/applications/osgconv/osgconv.cpp b/applications/osgconv/osgconv.cpp
index 8c5ba420d..a324dd0ee 100644
--- a/applications/osgconv/osgconv.cpp
+++ b/applications/osgconv/osgconv.cpp
@@ -740,7 +740,7 @@ int main( int argc, char **argv )
     while(arguments.read("--addMissingColours") || arguments.read("--addMissingColors")) { addMissingColours = true; }
 
     bool do_overallNormal = false;
-    while(arguments.read("--overallNormal") || arguments.read("--overallNormal")) { do_overallNormal = true; }
+    while(arguments.read("--overallNormal")) { do_overallNormal = true; }
 
     bool enableObjectCache = false;
     while(arguments.read("--enable-object-cache")) { enableObjectCache = true; }