diff --git a/gprMax/gprMax.py b/gprMax/gprMax.py
index ad0915c7..c0b20ebe 100644
--- a/gprMax/gprMax.py
+++ b/gprMax/gprMax.py
@@ -35,7 +35,7 @@ from gprMax.input_cmds_multiuse import process_multicmds
 from gprMax.input_cmds_singleuse import process_singlecmds
 from gprMax.materials import Material
 from gprMax.output import prepare_output_file, write_output
-from gprMax.pml import build_pml, update_electric_pml, update_magnetic_pml
+from gprMax.pml import build_pmls, update_electric_pml, update_magnetic_pml
 from gprMax.utilities import update_progress, logo, human_size
 from gprMax.yee_cell_build import build_electric_components, build_magnetic_components
 
@@ -276,7 +276,7 @@ def run_model(args, modelrun, numbermodelruns, inputfile, usernamespace):
     print('\nInput file processed in [HH:MM:SS]: {}'.format(datetime.timedelta(seconds=int(tinputprocend - tinputprocstart))))
 
     # Build the PML and calculate initial coefficients
-    build_pml(G)
+    build_pmls(G)
 
     # Build the model, i.e. set the material properties (ID) for every edge of every Yee cell
     tbuildstart = perf_counter()
diff --git a/gprMax/pml.py b/gprMax/pml.py
index b9ee35b9..15813e92 100644
--- a/gprMax/pml.py
+++ b/gprMax/pml.py
@@ -228,7 +228,7 @@ class PML:
             self.HRF[x, :] = (2*Hsigma*G.dt) / (Hkappa * tmp)
 
 
-def build_pml(G):
+def build_pmls(G):
     """This function builds instances of the PML and calculates the initial parameters and coefficients including setting profile
         (based on underlying material er and mr from solid array).
     """