diff --git a/src/midje/ideas/arrow_symbols.clj b/src/midje/ideas/arrow_symbols.clj
index 6c0be5286..a86bca356 100644
--- a/src/midje/ideas/arrow_symbols.clj
+++ b/src/midje/ideas/arrow_symbols.clj
@@ -5,6 +5,7 @@
 (def =deny=> "=deny=>")
 (def =streams=> "=streams=>")
 (def =future=> "=future=>")
+(def =contains=> "=contains=>")
 
 (def ^{:doc "Use this when testing Midje code that processes arrow-forms"}
      =test=> "=test=>")
diff --git a/src/midje/ideas/arrows.clj b/src/midje/ideas/arrows.clj
index 677f902ab..9f066c7a7 100644
--- a/src/midje/ideas/arrows.clj
+++ b/src/midje/ideas/arrows.clj
@@ -7,7 +7,7 @@
 
 ;; Arrow groupings
 (def expect-arrows [=> =not=> =deny=> =future=>])
-(def fake-arrows [=> =streams=>])
+(def fake-arrows [=> =contains=> =streams=>])
 (def all-arrows (concat expect-arrows fake-arrows))