diff --git a/run b/run
index ceb6e5817329fb6dd0323f1a8c3733514f8fde79..93e4b0d18f9a2575a920cbd63f28cc5ca688bbde 100755
--- a/run
+++ b/run
@@ -22,7 +22,7 @@ fi
 # values for that; it doesn't need a lot
 if [ "$1" = "spark.deploy.master.Master" -o "$1" = "spark.deploy.worker.Worker" ]; then
   SPARK_MEM=${SPARK_DAEMON_MEMORY:-512m}
-  SPARK_DAEMON_JAVA_OPTS+="-Dspark.akka.logLifecycleEvents=true"
+  SPARK_DAEMON_JAVA_OPTS+=" -Dspark.akka.logLifecycleEvents=true"
   SPARK_JAVA_OPTS=$SPARK_DAEMON_JAVA_OPTS   # Empty by default
 fi