Index: /issm/trunk-jpl/src/c/solutionsequences/convergence.cpp
===================================================================
--- /issm/trunk-jpl/src/c/solutionsequences/convergence.cpp	(revision 26786)
+++ /issm/trunk-jpl/src/c/solutionsequences/convergence.cpp	(revision 26787)
@@ -90,6 +90,6 @@
 		//compute max(du)
 		duf=old_uf->Duplicate(); old_uf->Copy(duf); duf->AYPX(uf,-1.0);
-		ndu=duf->Norm(NORM_TWO); nduinf=duf->Norm(NORM_INF);
-		if (xIsNan<IssmDouble>(ndu) || xIsNan<IssmDouble>(nu)) _error_("convergence criterion is NaN!");
+		nduinf=duf->Norm(NORM_INF);
+		if (xIsNan<IssmDouble>(nduinf)) _error_("convergence criterion is NaN!");
 
 		//clean up