diff --git a/backend/postcode_splitter/handler/Dockerfile b/backend/postcode_splitter/handler/Dockerfile
index ad0d1d69..74c00b9f 100644
--- a/backend/postcode_splitter/handler/Dockerfile
+++ b/backend/postcode_splitter/handler/Dockerfile
@@ -20,6 +20,9 @@ COPY utils/ utils/
 COPY backend/ backend/
 COPY datatypes/ datatypes/
 
-# Lambda handler
-CMD ["backend.postcode_splitter.main.handler"]
+# Copy the handler
+COPY backend/postcode_splitter/main.py .
+
+# Lambda handler
+CMD ["main.handler"]