From cc9d2e5ac79b142ac3f412fa530193d77cfdf116 Mon Sep 17 00:00:00 2001
From: Lindsey Heagy <lheagy@eos.ubc.ca>
Date: Sun, 20 Mar 2016 12:18:07 -0700
Subject: [PATCH] we don't support m is none

---
 SimPEG/EM/FDEM/FDEM.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SimPEG/EM/FDEM/FDEM.py b/SimPEG/EM/FDEM/FDEM.py
index 5c2683b2..3c2183b1 100644
--- a/SimPEG/EM/FDEM/FDEM.py
+++ b/SimPEG/EM/FDEM/FDEM.py
@@ -36,7 +36,7 @@ class BaseFDEMProblem(BaseEMProblem):
     surveyPair = SurveyFDEM
     fieldsPair = Fields
 
-    def fields(self, m=None):
+    def fields(self, m):
         """
         Solve the forward problem for the fields.