diff --git a/pystencils/backends/cbackend.py b/pystencils/backends/cbackend.py
index d8facba7627d9f23222b190d41f15f9d7788c9e8..72c9b649b18c0900f15ac65c709cfb12197359cb 100644
--- a/pystencils/backends/cbackend.py
+++ b/pystencils/backends/cbackend.py
@@ -174,7 +174,7 @@ class CBackend:
     def _print_KernelFunction(self, node):
         function_arguments = ["%s %s" % (str(s.symbol.dtype), s.symbol.name) for s in node.get_parameters()]
         launch_bounds = ""
-        if self.__class__ == 'cuda':
+        if self._dialect == 'cuda':
             max_threads = node.indexing.max_threads_per_block()
             if max_threads:
                 launch_bounds = "__launch_bounds__({}) ".format(max_threads)