diff --git a/aconversions/src/aconversion/aconversion.cpp b/aconversions/src/aconversion/aconversion.cpp
index efc38b7991040294c1e0c014c74d9d7608fd2d82..fec6d8d2adc67547958d34320ae9de6a39335bbb 100644
--- a/aconversions/src/aconversion/aconversion.cpp
+++ b/aconversions/src/aconversion/aconversion.cpp
@@ -128,7 +128,7 @@ int main(int argc, char* argv[])
   }
   catch( AlibException & e )
   {
-      cout << e.what( ) << endl;
+      cerr << e.what( ) << endl;
       return 1;
   }