diff --git a/Project.toml b/Project.toml
index a65ffa760..23eccbc3f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "NonlinearSolve"
 uuid = "8913a72c-1f9b-4ce2-8d82-65094dcecaec"
 authors = ["Kanav Gupta <kanav0610@gmail.com>"]
-version = "0.3.11"
+version = "0.3.12"
 
 [deps]
 ArrayInterface = "4fba245c-0d91-5ea0-9b3e-6abc04ee57a9"
diff --git a/test/runtests.jl b/test/runtests.jl
index c021c8a86..7b3367904 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -20,21 +20,28 @@ function benchmark_scalar(f, u0)
     sol = (solve(probN, NewtonRaphson()))
 end
 
-f, u0 = (u,p) -> u .* u .- 2, @SVector[1.0, 1.0]
-sf, su0 = (u,p) -> u * u - 2, 1.0
-sol = benchmark_immutable(f, u0)
+function ff(u,p)
+    u .* u .- 2
+end
+const cu0 = @SVector[1.0, 1.0]
+function sf(u,p)
+    u * u - 2
+end
+const csu0 = 1.0
+
+sol = benchmark_immutable(ff, cu0)
 @test sol.retcode === Symbol(NonlinearSolve.DEFAULT)
 @test all(sol.u .* sol.u .- 2 .< 1e-9)
-sol = benchmark_mutable(f, u0)
+sol = benchmark_mutable(ff, cu0)
 @test sol.retcode === Symbol(NonlinearSolve.DEFAULT)
 @test all(sol.u .* sol.u .- 2 .< 1e-9)
-sol = benchmark_scalar(sf, su0)
+sol = benchmark_scalar(sf, csu0)
 @test sol.retcode === Symbol(NonlinearSolve.DEFAULT)
 @test sol.u * sol.u - 2 < 1e-9
 
-@test (@ballocated benchmark_immutable($f, $u0)) == 0
-@test (@ballocated benchmark_mutable($f, $u0)) < 200
-@test (@ballocated benchmark_scalar($sf, $su0)) == 0
+@test (@ballocated benchmark_immutable(ff, cu0)) == 0
+@test (@ballocated benchmark_mutable(ff, cu0)) < 200
+@test (@ballocated benchmark_scalar(sf, csu0)) == 0
 
 # AD Tests
 using ForwardDiff
@@ -143,7 +150,7 @@ sol = solve!(solver)
 # these should call the iterator version
 solver = init(probB, Bisection())
 @test solver isa NonlinearSolve.BracketingImmutableSolver
-# Question: Do we need BracketingImmutableSolver? We have fast scalar overload and 
+# Question: Do we need BracketingImmutableSolver? We have fast scalar overload and
 # Bracketing solvers work only for scalars.
 
 solver = init(probB, Bisection(); immutable = false)