diff --git a/blast/coupler.py b/blast/coupler.py
index b94e05e2079d2005595ffd889c2c30f37ffcf569..ba45552022017168572480a38d3449e24ec7e730 100644
--- a/blast/coupler.py
+++ b/blast/coupler.py
@@ -72,8 +72,8 @@ class Coupler:
             aeroCoeffs = np.vstack((aeroCoeffs, [self.iSolverAPI.getCl(), self.vSolver.Cdt, self.vSolver.Cdf + self.iSolverAPI.getCd(), self.vSolver.Cdf]))
 
             # Check convergence status.
-            #cd = self.vSolver.Cdf + self.iSolverAPI.getCd()
-            cd = self.vSolver.Cdt if self.vSolver.Cdt != 0 else self.vSolver.Cdf + self.iSolverAPI.getCd()
+            cd = self.vSolver.Cdf + self.iSolverAPI.getCd()
+            #cd = self.vSolver.Cdt if self.vSolver.Cdt != 0 else self.vSolver.Cdf + self.iSolverAPI.getCd()
             error = abs((cd - cdPrev) / cd) if cd != 0 else 1
 
             if error <= self.couplTol: