diff --git a/src/norecompile.jl b/src/norecompile.jl
index 1f0406050..fa6992cc8 100644
--- a/src/norecompile.jl
+++ b/src/norecompile.jl
@@ -64,7 +64,7 @@ function wrapfun_iip(ff,
         Tuple{dualT1, T2, T3, dualT4},     # tgrad
         )
 
-    iip_returnlists = ntuple(x -> Nothing, 4)
+    iip_returnlists = ntuple(x -> Nothing, length(iip_arglists)
 
     fwt = map(iip_arglists, iip_returnlists) do A, R
         FunctionWrappersWrappers.FunctionWrappers.FunctionWrapper{R, A}(Void(ff))