diff --git a/Exec/unit_tests/diffusion_test/README.md b/Exec/unit_tests/diffusion_test/README.md
index b7f030bc69..0d26264dec 100644
--- a/Exec/unit_tests/diffusion_test/README.md
+++ b/Exec/unit_tests/diffusion_test/README.md
@@ -40,17 +40,17 @@ analyic solution) at the end of the simulation.  This can be used
 for convergence testing.
 
 
-## 2-d cylindrical with AMR
+## 2-d axisymmetric with AMR
 
 This uses the 2nd order accurate predictor-corrector formulation of
 diffusion that is used with the CTU hydrodynamics solver.  A test of
-the diffusion in 2-d cylindrical coordinates, with 2 levels of
-refinement can be run as:
+the diffusion in 2-d cylindrical axisymmetric coordinates,
+with 2 levels of refinement can be run as:
 
 ```
-./Castro2d.gnu.ex inputs.2d.cyl amr.n_cell=64  128
-./Castro2d.gnu.ex inputs.2d.cyl amr.n_cell=128 256
-./Castro2d.gnu.ex inputs.2d.cyl amr.n_cell=256 512
+./Castro2d.gnu.ex inputs.2d.axisymmetric amr.n_cell=64  128
+./Castro2d.gnu.ex inputs.2d.axisymmetric amr.n_cell=128 256
+./Castro2d.gnu.ex inputs.2d.axisymmetric amr.n_cell=256 512
 ```
 
 At the end, each run will report the norm of the error against the
diff --git a/Exec/unit_tests/diffusion_test/inputs.2d.cyl b/Exec/unit_tests/diffusion_test/inputs.2d.axisymmetric
similarity index 100%
rename from Exec/unit_tests/diffusion_test/inputs.2d.cyl
rename to Exec/unit_tests/diffusion_test/inputs.2d.axisymmetric
diff --git a/Exec/unit_tests/diffusion_test/prob_util.H b/Exec/unit_tests/diffusion_test/prob_util.H
index cfe897f6e0..db2a798522 100644
--- a/Exec/unit_tests/diffusion_test/prob_util.H
+++ b/Exec/unit_tests/diffusion_test/prob_util.H
@@ -5,7 +5,7 @@ AMREX_GPU_HOST_DEVICE AMREX_INLINE
 Real analytic(const Real* r, const Real time, const int coord_type) {
 
     Real exponent;
-    if (AMREX_SPACEDIM == 1 && coord_type == 2) {
+    if (coord_type == 2) {
         // Handle spherical coordinates
         exponent = 3.0_rt / 2.0_rt;
     } else if (AMREX_SPACEDIM == 2 && coord_type == 1) {