Comma to break sentence into contrasting options

1 files changed, 1 insertions, 1 deletions

diff --git a/subplot.md b/subplot.md
index 69e0db8..dc2499c 100644
--- a/subplot.md
+++ b/subplot.md
@@ -479,7 +479,7 @@ When you are formulating your scenarios, it is common to try and use phraseology
 along the lines of _if this happens then that is the case_ but this is not
 language which works well with subplot.  Scenarios describe what will happen in
 the success case.  As such we don't construct scenarios which say _if foo happens
-then the case fails_ instead we say _when I do the thing then foo does not happen_.
+then the case fails_, instead we say _when I do the thing then foo does not happen_.
 This is a subtle but critical shift in the construction of your test cases which
 will mean that they map more effectively to scenarios.