diff --git a/loopy/target/execution.py b/loopy/target/execution.py
index a032664d506dabc083e25537a4a377accabd1bbf..0ac82b71d9ed712713dbcc773ab8074afdbbfbdf 100644
--- a/loopy/target/execution.py
+++ b/loopy/target/execution.py
@@ -531,7 +531,7 @@ class ExecutionWrapperGeneratorBase(object):
                         gen("(%s,) = %s.shape" % (", ".join(shape), arg.name))
                         gen("(%s,) = %s.strides" % (", ".join(strides), arg.name))
 
-                        gen("if not (%s):"
+                        gen("if not %s:"
                                 % self.get_strides_check_expr(
                                     shape, strides,
                                     (strify(s) for s in sym_strides)))