diff --git a/swaks-tests/run-tests.sh b/swaks-tests/run-tests.sh
index 743bdae..3b134e9 100755
--- a/swaks-tests/run-tests.sh
+++ b/swaks-tests/run-tests.sh
@@ -4,10 +4,10 @@ export SWAKS_OPT_server="127.0.0.1:2500"
 export SWAKS_OPT_to="swaks@inbucket.local"
 
 # Basic test
-swaks --h-Subject: "Swaks Plain Text" --body text.txt
+swaks $* --h-Subject: "Swaks Plain Text" --body text.txt
 
 # HTML test
-swaks --h-Subject: "Swaks HTML" --data html.raw
+swaks $* --h-Subject: "Swaks HTML" --data html.raw
 
 # Attachment test
-swaks --h-Subject: "Swaks Attachment" --attach-type image/png --attach favicon.png --body text.txt
+swaks $* --h-Subject: "Swaks Attachment" --attach-type image/png --attach favicon.png --body text.txt