diff --git a/SimPEG/EM/FDEM/FDEM.py b/SimPEG/EM/FDEM/FDEM.py
index f2167fd8..1ae7d2e4 100644
--- a/SimPEG/EM/FDEM/FDEM.py
+++ b/SimPEG/EM/FDEM/FDEM.py
@@ -243,10 +243,9 @@ class Problem_e(BaseFDEMProblem):
         MfMui = self.MfMui
         S_mDeriv, S_eDeriv = src.evalDeriv(self, adjoint)
 
-        if adjoint:
+        if adjoint: 
             dRHS = MfMui * (C * v)
             return S_mDeriv(dRHS) - 1j * omega(freq) * S_eDeriv(v)
-
         else:
             return C.T * (MfMui * S_mDeriv(v)) -1j * omega(freq) * S_eDeriv(v)
 
diff --git a/SimPEG/EM/FDEM/SrcFDEM.py b/SimPEG/EM/FDEM/SrcFDEM.py
index 8209008c..076fadb6 100644
--- a/SimPEG/EM/FDEM/SrcFDEM.py
+++ b/SimPEG/EM/FDEM/SrcFDEM.py
@@ -15,7 +15,7 @@ class BaseSrc(Survey.BaseSrc):
         S_e = self.S_e(prob)
         return S_m, S_e
 
-    def evalDeriv(self, prob, v, adjoint=False):
+    def evalDeriv(self, prob, adjoint=False):
         return lambda v: self.S_mDeriv(prob,v,adjoint), lambda v: self.S_eDeriv(prob,v,adjoint)
 
     def bPrimary(self, prob):
@@ -333,7 +333,7 @@ class PrimSecSigma(BaseSrc):
 
     def S_eDeriv(self, prob, v, adjoint = False):
         MeSigmaDeriv = prob.MeSigmaDeriv
-        if adjoint is not True:
+        if not adjoint:
             return MeSigmaDeriv(Utils.mkvc(self._ePrimary)) * v # TODO: This is really sloppy and will not work if more than one freq
         return MeSigmaDeriv(Utils.mkvc(self._ePrimary)).T * v