diff --git a/src/solvers/indvel.m b/src/solvers/indvel.m
index 98e53ffe61ae3bfc970b84e725567bac9d73c171..2f5c172d52e85ed531e4727d29f29d5d429ecd04 100644
--- a/src/solvers/indvel.m
+++ b/src/solvers/indvel.m
@@ -125,7 +125,7 @@ function force = coeff2force(coeff, OpRot, speed)
     % COEFF2FORCE Convert aerodynamic coefficient to force
 
     rho = OpRot.Op.Flow.rho;
-    nondim = 0.5 * rho * 2 * pi * OpRot.Rot.Bl.area .* speed.^2;
+    nondim = 0.5 * rho * OpRot.Rot.Bl.area .* speed.^2;
 
     force = coeff .* nondim;