diff --git a/litex/soc/interconnect/csr.py b/litex/soc/interconnect/csr.py
index 849cfd27e..711785a9c 100644
--- a/litex/soc/interconnect/csr.py
+++ b/litex/soc/interconnect/csr.py
@@ -217,10 +217,10 @@ class CSRFieldAggregate:
         for field in fields:
             if field.access is None:
                 field.access = access
-            elif field.access == CSRAccess.ReadOnly:
+            elif access == CSRAccess.ReadOnly:
                 assert not field.pulse
                 assert field.access == CSRAccess.ReadOnly
-            elif field.access == CSRAccess.ReadWrite:
+            elif access == CSRAccess.ReadWrite:
                 assert field.access in [CSRAccess.ReadWrite, CSRAccess.WriteOnly]
                 if field.pulse:
                     field.access = CSRAccess.WriteOnly