diff --git a/curl.sh b/curl.sh
index e10d63f99..492c6e7ec 100755
--- a/curl.sh
+++ b/curl.sh
@@ -11,6 +11,6 @@ echo GITHUB_TOKEN="$GITHUB_TOKEN"
 curl \
   -X POST \
   -H "Accept: application/vnd.github+json" \
-  -H "Authorization: Bearer $GITHUB_TOKEN" \
+  -H "Authorization: Bearer ${GITHUB_TOKEN}" \
   https://api.github.com/repos/jstan-isch/spring-petclinic/check-runs \
- -d '{"name":"$CONTEXT", "head_sha":"$SHA", "status":"completed", "conclusion":"$STATUS"}'
+ -d '{"name":"${CONTEXT}", "head_sha":"${SHA}", "status":"completed", "conclusion":"${STATUS}"}'