diff --git a/run.sh b/run.sh
index 0382920..8efab11 100644
--- a/run.sh
+++ b/run.sh
@@ -41,7 +41,7 @@ else
     surge_command="surge"
 fi
 
-surge_command ="$surge_command $WERCKER_SURGE_DIRECTORY $WERCKER_SURGE_DOMAIN --token $WERCKER_SURGE_TOKEN"
+surge_command="${surge_command} $WERCKER_SURGE_DIRECTORY $WERCKER_SURGE_DOMAIN --token $WERCKER_SURGE_TOKEN"
 
 debug "$surge_command"