diff --git a/Project.toml b/Project.toml
index ecf8d92756..9b47195559 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "ModelingToolkit"
 uuid = "961ee093-0014-501f-94e3-6117800e7a78"
 authors = ["Chris Rackauckas <accounts@chrisrackauckas.com>"]
-version = "1.3.0"
+version = "1.3.1"
 
 [deps]
 DiffEqBase = "2b5f629d-d688-5b77-993f-72d75c75574e"
diff --git a/src/systems/diffeqs/diffeqsystem.jl b/src/systems/diffeqs/diffeqsystem.jl
index 91897e6b0e..edf01cf619 100644
--- a/src/systems/diffeqs/diffeqsystem.jl
+++ b/src/systems/diffeqs/diffeqsystem.jl
@@ -276,7 +276,7 @@ function DiffEqBase.ODEFunction{iip}(sys::ODESystem, dvs = sys.dvs, ps = sys.ps;
     end
 
     ODEFunction{iip}(f,jac=_jac,
-                      tgrad = tgrad,
+                      tgrad = _tgrad,
                       Wfact = _Wfact,
                       Wfact_t = _Wfact_t,
                       syms = string.(sys.dvs))