diff --git a/azure/coverage.yml b/azure/coverage.yml
index e61f22a..701c2d7 100644
--- a/azure/coverage.yml
+++ b/azure/coverage.yml
@@ -50,7 +50,7 @@ jobs:
      # Sadly we don't have a way of communicating the condition on has_secret
      - ${{ parameters.setup }}
      # Determine what features to use
-     - bash: "if [[ -z $FEATURES ]]; then echo \"##vso[task.setvariable variable=features]\"; else echo \"##vso[task.setvariable variable=features]--features '$FEATURES'\"; fi"
+     - bash: "if [[ -z $FEATURES ]]; then echo \"##vso[task.setvariable variable=features]\"; else echo \"##vso[task.setvariable variable=features]--features \\\"$FEATURES\\\"\"; fi"
        name: features
        displayName: Determine feature flags
        env:
diff --git a/azure/test.yml b/azure/test.yml
index 5540217..7cd71f6 100644
--- a/azure/test.yml
+++ b/azure/test.yml
@@ -37,7 +37,7 @@ jobs:
     parameters:
       rust: ${{ parameters.rust }}
       setup: ${{ parameters.setup }}
-  - bash: "if [[ -z $FEATURES ]]; then echo \"##vso[task.setvariable variable=features]\"; else echo \"##vso[task.setvariable variable=features]--features '$FEATURES'\"; fi"
+  - bash: "if [[ -z $FEATURES ]]; then echo \"##vso[task.setvariable variable=features]\"; else echo \"##vso[task.setvariable variable=features]--features \\\"$FEATURES\\\"\"; fi"
     name: features
     displayName: Determine feature flags
     env: