diff --git a/docker/DebugDockerfile b/docker/DebugDockerfile
index b33cec4dd..76dadf6df 100644
--- a/docker/DebugDockerfile
+++ b/docker/DebugDockerfile
@@ -7,4 +7,4 @@ RUN go get github.com/derekparker/delve/cmd/dlv
 
 COPY build/* /
 
-CMD ["/root/go/bin/dlv", "--listen=:777", "--headless=true", "--api-version=2", "exec", "/postgres-operator"]
+CMD ["/root/go/bin/dlv", "--listen=:7777", "--headless=true", "--api-version=2", "exec", "/postgres-operator"]