diff --git a/build/ci/ci.sh b/build/ci/ci.sh
index de2692a..ea519b9 100755
--- a/build/ci/ci.sh
+++ b/build/ci/ci.sh
@@ -18,7 +18,7 @@ fail () {
 }
 
 run () {
-    printf "\033[32m%\033[0m $*\n" 1>&2
+    printf "\033[32m%\033[0m %s\n" "$*" 1>&2
     "$@"
 }