diff --git a/Dockerfile b/Dockerfile
index 0785da7101f4151e9e5eea6998241db80a2de3f9..26c27f965db85eb2ebd8720e0da0d422410579c0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -27,9 +27,9 @@ FROM alpine:3.20
 
 ARG DEPENDENCY_DIR
 
-ENV FLUTTER_HOME "/flutter"
-ENV PATH $PATH:$FLUTTER_HOME/bin
-ENV FLUTTER_GIT_URL "unknown source"
+ENV FLUTTER_HOME="/flutter"
+ENV PATH=$PATH:$FLUTTER_HOME/bin
+ENV FLUTTER_GIT_URL="unknown source"
 
 COPY --from=download $DEPENDENCY_DIR /