diff --git a/apps/mosquitto-prometheus-exporter/Dockerfile b/apps/mosquitto-prometheus-exporter/Dockerfile
index 4345c72..ecf4908 100644
--- a/apps/mosquitto-prometheus-exporter/Dockerfile
+++ b/apps/mosquitto-prometheus-exporter/Dockerfile
@@ -11,8 +11,8 @@ RUN go install github.com/sapcc/mosquitto-exporter@latest
 FROM cr.wks/debian-stable
 LABEL source_repository="https://github.com/sapcc/mosquitto-exporter"
 
-COPY --from=build --chmod=0755 /usr/src/gopath/bin/mosquitto-exporter /mosquitto-exporter
-RUN ls -la /
+COPY --from=build /usr/src/gopath/bin/mosquitto-exporter /mosquitto-exporter
+RUN chmod 0755 /mosquitto-exporter && ls -la /
 
 EXPOSE 9234