diff --git a/test/sumfact/hyperbolic/lineartransport.ufl b/test/sumfact/hyperbolic/lineartransport.ufl
index e41a2dca42a51840f806a9886b95a8fb7509bd3c..8fa698d935c924f4c79fb9653c1d43e959909ccb 100644
--- a/test/sumfact/hyperbolic/lineartransport.ufl
+++ b/test/sumfact/hyperbolic/lineartransport.ufl
@@ -23,7 +23,7 @@ mass = u*v*dx
 r = -1.*u*inner(beta, grad(v))*dx \
   - numerical_flux(n, u('+'), u('-'))*jump(v)*dS \
   + inner(beta, n)*u*v*dso \
-  + numerical_flux(n, g, u('-'))*v*dsd
+  + numerical_flux(n, 0.0, u('-'))*v*dsd
 
 forms = [mass, r]
 exact_solution = 0.0