diff --git a/talon.wdl b/talon.wdl
index 07c1071322ee1f6cf73d2114fba3a7ebc7f93014..e2395cb782158fe4398d1e7b5ca5011cda27b9b5 100644
--- a/talon.wdl
+++ b/talon.wdl
@@ -470,7 +470,7 @@ task Talon {
             echo ${configFileLine} >> ~{outputPrefix}/talonConfigFile.csv
         done
         talon \
-        ~{"--f " + outputPrefix + "/talonConfigFile.csv"}
+        ~{"--f " + outputPrefix + "/talonConfigFile.csv"} \
         ~{"--db " + databaseFile} \
         ~{"--build " + genomeBuild} \
         ~{"--threads " + cores} \