diff --git a/Testing/Fa/MapActivation.cxx b/Testing/Fa/MapActivation.cxx
index cfbea31dec4beb5726f937af7ab8f8c2bc3f8253..0a4df0d0e1e1b7239d30cbfd26d9ad053de93035 100755
--- a/Testing/Fa/MapActivation.cxx
+++ b/Testing/Fa/MapActivation.cxx
@@ -72,7 +72,7 @@ int main(int argc, char* argv[] )
 	
 	typedef itk::ImageRegionIterator< ListImageType > IteratorType;
 	IteratorType It1( tabreadImage, tabreadImage->GetLargestPossibleRegion() );
-	int nblines = tabreadImage->GetLargestPossibleRegion().GetSize()[1];
+	const int nblines = (const int)(tabreadImage->GetLargestPossibleRegion().GetSize()[1]);
 
 	const int nbcolonnes=9;//tabreadImage->GetLargestPossibleRegion().GetSize()[0];