diff --git a/src/io/estrado/Pipeline.groovy b/src/io/estrado/Pipeline.groovy
index 6cc0a67..33f8207 100644
--- a/src/io/estrado/Pipeline.groovy
+++ b/src/io/estrado/Pipeline.groovy
@@ -165,7 +165,7 @@ def getHelmReleaseOverrides(Map map=[:]) {
     // jenkins and workflow restriction force this function instead of map.each(): https://issues.jenkins-ci.org/browse/JENKINS-27421
     def options = ""
     map.each { key, value ->
-        options += "$key=$value,"
+        options += "$key=\"$value\","
     }
 
     return options