diff --git a/src/auxkernels/WallShearStressAux.C b/src/auxkernels/WallShearStressAux.C
index 046948785b..43ba0c13b6 100644
--- a/src/auxkernels/WallShearStressAux.C
+++ b/src/auxkernels/WallShearStressAux.C
@@ -40,5 +40,5 @@ WallShearStressAux::computeValue()
   // Parallel component of prior velocity gradient
   grad_vel_wall -= (_normals[_qp] * grad_vel_wall) * _normals[_qp];
 
-  return raw_value(_mu[_qp]) * std::norm(grad_vel_wall);
+  return raw_value(_mu[_qp]) * grad_vel_wall.norm();
 }