diff --git a/sumpy/kernel.py b/sumpy/kernel.py
index 48a7548197da92681760946245a1117cf29136fb..6f55351934b751dec61bff136c10a520ebd2f0f6 100644
--- a/sumpy/kernel.py
+++ b/sumpy/kernel.py
@@ -100,6 +100,10 @@ class KernelArgument(object):
             return NotImplemented
         return self.loopy_arg == other.loopy_arg
 
+    def __neq__(self, other):
+        # Needed for python2
+        return not self == other
+
     def __hash__(self):
         return (type(self), self.loopy_arg)