diff --git a/.github/actions/setup-builder/action.yaml b/.github/actions/setup-builder/action.yaml
index 61faa055b1..73b50e0574 100644
--- a/.github/actions/setup-builder/action.yaml
+++ b/.github/actions/setup-builder/action.yaml
@@ -31,12 +31,15 @@ runs:
   steps:
     - name: Setup Rust Toolchain
       shell: bash
+      env:
+        RUST_VERSION: ${{ inputs.rust-version }}
+        TARGETS: ${{ inputs.targets }}
       run: |
-        echo "Installing ${{ inputs.rust-version }}"
-        if [ -n "${{ inputs.targets}}" ]; then
-          rustup toolchain install ${{ inputs.rust-version }} -t ${{ inputs.targets }}
+        echo "Installing $RUST_VERSION"
+        if [ -n "$TARGETS" ]; then
+          rustup toolchain install $RUST_VERSION -t $TARGETS
         else
-          rustup toolchain install ${{ inputs.rust-version }}
+          rustup toolchain install $RUST_VERSION
         fi
-        rustup default ${{ inputs.rust-version }}
+        rustup default $RUST_VERSION
         rustup component add rustfmt clippy