diff --git a/libensemble/tests/functionality_tests/1d_sampling.json b/libensemble/tests/functionality_tests/1d_sampling.json
index 06d518d83..6066cdd69 100644
--- a/libensemble/tests/functionality_tests/1d_sampling.json
+++ b/libensemble/tests/functionality_tests/1d_sampling.json
@@ -7,7 +7,7 @@
     "gen_max": 501
   },
   "sim_specs": {
-    "sim_f": "libensemble.sim_funcs.one_d_func.one_d_example",
+    "sim_f": "libensemble.sim_funcs.simple_sim.norm_eval",
     "inputs": [
       "x"
     ],
diff --git a/libensemble/tests/functionality_tests/1d_sampling.toml b/libensemble/tests/functionality_tests/1d_sampling.toml
index 3d01c3e2a..6618019a6 100644
--- a/libensemble/tests/functionality_tests/1d_sampling.toml
+++ b/libensemble/tests/functionality_tests/1d_sampling.toml
@@ -6,7 +6,7 @@
   gen_max = 501
 
 [sim_specs]
-  sim_f = "libensemble.sim_funcs.one_d_func.one_d_example"
+  sim_f = "libensemble.sim_funcs.simple_sim.norm_eval"
   inputs = ["x"]
   [sim_specs.outputs]
     [sim_specs.outputs.f]
diff --git a/libensemble/tests/functionality_tests/1d_sampling.yaml b/libensemble/tests/functionality_tests/1d_sampling.yaml
index 4ac473355..3e82548ae 100644
--- a/libensemble/tests/functionality_tests/1d_sampling.yaml
+++ b/libensemble/tests/functionality_tests/1d_sampling.yaml
@@ -7,7 +7,7 @@ exit_criteria:
     gen_max: 501
 
 sim_specs:
-    sim_f: libensemble.sim_funcs.one_d_func.one_d_example
+    sim_f: libensemble.sim_funcs.simple_sim.norm_eval
     inputs:
         - x
     outputs: