diff --git a/gprMax/config.py b/gprMax/config.py
index 12c1f910..7891c898 100644
--- a/gprMax/config.py
+++ b/gprMax/config.py
@@ -123,7 +123,7 @@ class ModelConfig:
         #   dispersivedtype: Data type for dispersive materials.
         #   dispersiveCdtype: Data type for dispersive materials in Cython.
         #   drudelorentz: True/False model contains Drude or Lorentz materials.
-        #   crealfunc: String to substitute into CUDA kernels for fields
+        #   crealfunc: String to substitute into CUDA/OpenCL kernels for fields
         #                   dependent on dispersive material type.
         self.materials = {
             "maxpoles": 0,