--- a/src/ov-galois.cc
+++ b/src/ov-galois.cc
@@ -190,7 +190,7 @@
   int nr = rows ();
   int nc = columns ();
 
-  return (nr == 1 && nc == 1 || (nr == 0 || nc == 0));
+  return ((nr == 1 && nc == 1) || (nr == 0 || nc == 0));
 }
 
 void