diff --git a/src/Compiler/LambdaLift.idr b/src/Compiler/LambdaLift.idr
index 001c43e55f..46d6b5b347 100644
--- a/src/Compiler/LambdaLift.idr
+++ b/src/Compiler/LambdaLift.idr
@@ -368,10 +368,6 @@ mutual
            update Lifts { defs $= ((n, MkLFun (used us) bound scl') ::) }
            pure $ LUnderApp fc n (length bound) (allVars fc vars us)
     where
-        allPrfs : (vs : List Name) -> (unused : Vect (length vs) Bool) -> List (Var vs)
-        allPrfs [] _ = []
-        allPrfs (v :: vs) (False::uvs) = MkVar First :: map weaken (allPrfs vs uvs)
-        allPrfs (v :: vs) (True::uvs) = map weaken (allPrfs vs uvs)
 
         -- apply to all the variables. 'First' will be first in the last, which
         -- is good, because the most recently bound name is the first argument to
diff --git a/src/Core/TT/Var.idr b/src/Core/TT/Var.idr
index 39009f63a4..3fa7ac959e 100644
--- a/src/Core/TT/Var.idr
+++ b/src/Core/TT/Var.idr
@@ -521,8 +521,8 @@ usedIsVar :
 usedIsVar (False :: bs) First = assert_total $
   idris_crash "INTERNAL ERROR: Referenced variable marked as unused"
 usedIsVar (True :: bs) First = MkNVar First
-usedIsVar (False :: bs) (Later p) = usedIsVar (bs) p
-usedIsVar (True :: bs) (Later p) = later (usedIsVar (bs) p)
+usedIsVar (False :: bs) (Later p) = usedIsVar bs p
+usedIsVar (True :: bs) (Later p) = later (usedIsVar bs p)
 
 export
 usedNVar : (us : Used vars) -> NVar nm vars -> NVar nm (used us)