diff --git a/include/Cubism/Indexers.h b/include/Cubism/Indexers.h
index e4c00cb7d054ebe4e7c9920c09a228044627d5c5..50dcdf5477c57b9ac12181cf1e25fffefd88de1b 100644
--- a/include/Cubism/Indexers.h
+++ b/include/Cubism/Indexers.h
@@ -30,7 +30,7 @@ public:
     {
         const unsigned int retval = ix + sizeX*(iy + iz*sizeY);
 
-        assert(retval < sizeTotal && retval>=0);
+        assert(retval < sizeTotal);
 
         return retval;
     }