diff --git a/Dockerfile b/Dockerfile
index 7bd0312..5b74a08 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,6 +16,6 @@ RUN CGO_ENABLED=0 GOOS=linux go build -o /onyxia-api
 FROM alpine
 
 EXPOSE 8080
-ENV GIN_MODE release
+ENV GIN_MODE=release
 COPY --from=0 /onyxia-api /bin/onyxia-api
 CMD ["/bin/onyxia-api"]