diff --git a/EasyReflectometry/calculators/refl1d/wrapper.py b/EasyReflectometry/calculators/refl1d/wrapper.py
index 92c775b3..68ae5ed4 100644
--- a/EasyReflectometry/calculators/refl1d/wrapper.py
+++ b/EasyReflectometry/calculators/refl1d/wrapper.py
@@ -166,7 +166,7 @@ def calculate(self, q_array: np.ndarray, model_name: str) -> np.ndarray:
         dq_vector = self._resolution_function(q_array)
 
         if is_constant_resolution_function(self._resolution_function):
-            # Compute percentage of Q and normalize
+            # Get percentage of Q and change from sigma to FWHM
             dq_vector = dq_vector * q_array / 100 / (2 * np.sqrt(2 * np.log(2)))
 
         q = names.QProbe(
diff --git a/EasyReflectometry/calculators/refnx/wrapper.py b/EasyReflectometry/calculators/refnx/wrapper.py
index 40d9082d..14d562bf 100644
--- a/EasyReflectometry/calculators/refnx/wrapper.py
+++ b/EasyReflectometry/calculators/refnx/wrapper.py
@@ -132,7 +132,8 @@ def calculate(self, q_array: np.ndarray, model_name: str) -> np.ndarray:
 
         dq_vector = self._resolution_function(q_array)
         if is_constant_resolution_function(self._resolution_function):
-            # For a constant resolution percentage refnx supports just to pass a float
+            # FWHM Percentage resolution is constant given as
+            # For a constant resolution percentage refnx supports to pass a scalar value rather than a vector
             dq_vector = dq_vector[0]
 
         return model(x=q_array, x_err=dq_vector)