diff --git a/test/polyalgs.jl b/test/polyalgs.jl
index 30890e0ae..56e226818 100644
--- a/test/polyalgs.jl
+++ b/test/polyalgs.jl
@@ -1,4 +1,4 @@
-using NonlinearSolve
+using NonlinearSolve, Test
 
 f(u, p) = u .* u .- 2
 u0 = [1.0, 1.0]
@@ -19,4 +19,20 @@ function f(du, u, p)
 end
 
 prob = NonlinearProblem(f, [2.0,2.0,2.0], [1.0, 2.0, 2.5])
-sol = solve(prob)
\ No newline at end of file
+sol = solve(prob)
+@test SciMLBase.successful_retcode(sol)
+
+# https://github.com/SciML/NonlinearSolve.jl/issues/187
+
+f(u, p) = 0.5/1.5*log.(u./(1.0.-u)) .- 2.0*u .+1.0
+
+uspan = (0.02, 0.1)
+prob = IntervalNonlinearProblem(f, uspan)
+sol = solve(prob)
+@test SciMLBase.successful_retcode(sol)
+
+u0 = 0.06
+p = 2.0
+prob = NonlinearProblem(f, u0, p)
+solver = solve(prob)
+@test SciMLBase.successful_retcode(sol)
\ No newline at end of file