diff --git a/FORMULAS-BACKLOG-AND-FEATURE-IDEAS.md b/FORMULAS-BACKLOG-AND-FEATURE-IDEAS.md
index 114837f85..dac8d0202 100644
--- a/FORMULAS-BACKLOG-AND-FEATURE-IDEAS.md
+++ b/FORMULAS-BACKLOG-AND-FEATURE-IDEAS.md
@@ -12,7 +12,7 @@
 * [x] don't run more tests than need be if there is already failure in this formula's batch.
   
 * [x] syntax validate thata formula only has one check in it  
-  a. [ ] need to make this more thorough... right now the only test oft his feature checks a 
+  a. [ ] need to make this more thorough... right now the only test of this feature checks a 
      simple provided case, but needs to work with against-background, background and 
      other more interesting cases  
   
diff --git a/src/midje/ideas/formulas.clj b/src/midje/ideas/formulas.clj
index a49bfc384..4345c79e4 100644
--- a/src/midje/ideas/formulas.clj
+++ b/src/midje/ideas/formulas.clj
@@ -67,7 +67,7 @@
            ~conclusion-signal)))))
 
 (defn- check-part-of [form] 
-  (take-while #(not (and (named? %) (= "provided" (name %)))) 
+  (take-while #(not (and (named? %) (#{"provided" "against-background"} (name %)))) 
               (flatten form)))
 
 (defmethod validate "formula" [[_formula_ & args :as form]]
diff --git a/test/midje/ideas/t_formulas.clj b/test/midje/ideas/t_formulas.clj
index 5460d8e0f..46fe50c67 100644
--- a/test/midje/ideas/t_formulas.clj
+++ b/test/midje/ideas/t_formulas.clj
@@ -14,8 +14,19 @@
   (formula [a 1] 1)
   (formula "vector fact" [a 1] (contains 3))
   (formula "vector fact" [a 1] (contains 3))
-  (formula "vector fact" [a 1] (contains 3)
-    (provided (h anything) => 5)))
+
+  (formula "vector fact" [a 1] 
+    (contains 3)
+    (provided (h anything) => 5))
+
+  (formula "vector fact" [a 1] 
+    (contains 3)
+    (against-background (h anything) => 5))
+
+;  (formula "vector fact" [a 1]
+;    (against-background (h anything) => 5)
+;    (contains 3))
+  )
 
 (causes-validation-error #"There are too many expections in your formula form"
   (formula "vector fact" [a 1] a => 1 a => 1))