diff --git a/docker/fedora/Dockerfile b/docker/fedora/Dockerfile
index fdd972432d..56f9279c44 100644
--- a/docker/fedora/Dockerfile
+++ b/docker/fedora/Dockerfile
@@ -1,6 +1,8 @@
 FROM registry.fedoraproject.org/fedora:30
 
-ENV PATH=/usr/local/cargo/bin:$PATH
+ENV RUSTUP_HOME=/usr/local/rustup \
+    CARGO_HOME=/usr/local/cargo \
+    PATH=/usr/local/cargo/bin:$PATH
 
 COPY prepare.sh cleanup.sh /root/
 
diff --git a/docker/fedora/prepare.sh b/docker/fedora/prepare.sh
index b773c04045..eec0275e1d 100644
--- a/docker/fedora/prepare.sh
+++ b/docker/fedora/prepare.sh
@@ -202,9 +202,6 @@ RUSTUP_VERSION=1.21.0
 RUST_VERSION=1.40.0
 RUST_ARCH="x86_64-unknown-linux-gnu"
 
-# rustup-init uses those variables as install paths
-export RUSTUP_HOME=/usr/local/rustup
-export CARGO_HOME=/usr/local/cargo
 dnf install -y wget
 RUSTUP_URL=https://static.rust-lang.org/rustup/archive/$RUSTUP_VERSION/$RUST_ARCH/rustup-init
 wget $RUSTUP_URL