diff --git a/unsupported/Eigen/src/NonLinear/HybridNonLinearSolver.h b/unsupported/Eigen/src/NonLinear/HybridNonLinearSolver.h
index ee98300ab..188313b2c 100644
--- a/unsupported/Eigen/src/NonLinear/HybridNonLinearSolver.h
+++ b/unsupported/Eigen/src/NonLinear/HybridNonLinearSolver.h
@@ -190,12 +190,13 @@ HybridNonLinearSolver<FunctorType,Scalar>::solveOneStep(
 
     /* compute the qr factorization of the jacobian. */
 
-    ei_qrfac<Scalar>(n, n, fjac.data(), fjac.rows(), false, iwa, 1, wa1.data(), wa2.data());
+    ei_qrfac<Scalar>(n, n, fjac.data(), fjac.rows(), false, iwa, wa1.data(), wa2.data());
 
-    /* on the first iteration and if mode is 1, scale according */
-    /* to the norms of the columns of the initial jacobian. */
 
     if (iter == 1) {
+
+        /* on the first iteration and if mode is 1, scale according */
+        /* to the norms of the columns of the initial jacobian. */
         if (mode != 2)
             for (j = 0; j < n; ++j) {
                 diag[j] = wa2[j];
@@ -205,7 +206,6 @@ HybridNonLinearSolver<FunctorType,Scalar>::solveOneStep(
 
         /* on the first iteration, calculate the norm of the scaled x */
         /* and initialize the step bound delta. */
-
         wa3 = diag.cwise() * x;
         xnorm = wa3.stableNorm();
         delta = parameters.factor * xnorm;
@@ -507,7 +507,7 @@ HybridNonLinearSolver<FunctorType,Scalar>::solveNumericalDiffOneStep(
 
     /* compute the qr factorization of the jacobian. */
 
-    ei_qrfac<Scalar>(n, n, fjac.data(), fjac.rows(), false, iwa, 1, wa1.data(), wa2.data());
+    ei_qrfac<Scalar>(n, n, fjac.data(), fjac.rows(), false, iwa, wa1.data(), wa2.data());
 
     /* on the first iteration and if mode is 1, scale according */
     /* to the norms of the columns of the initial jacobian. */
diff --git a/unsupported/Eigen/src/NonLinear/LevenbergMarquardt.h b/unsupported/Eigen/src/NonLinear/LevenbergMarquardt.h
index 47576e733..2f964358a 100644
--- a/unsupported/Eigen/src/NonLinear/LevenbergMarquardt.h
+++ b/unsupported/Eigen/src/NonLinear/LevenbergMarquardt.h
@@ -217,7 +217,7 @@ LevenbergMarquardt<FunctorType,Scalar>::minimizeOneStep(
 
     /* compute the qr factorization of the jacobian. */
 
-    ei_qrfac<Scalar>(m, n, fjac.data(), fjac.rows(), true, ipvt.data(), n, wa1.data(), wa2.data());
+    ei_qrfac<Scalar>(m, n, fjac.data(), fjac.rows(), true, ipvt.data(), wa1.data(), wa2.data());
     ipvt.cwise()-=1; // qrfac() creates ipvt with fortran convetion (1->n), convert it to c (0->n-1)
 
     /* on the first iteration and if mode is 1, scale according */
@@ -480,7 +480,7 @@ LevenbergMarquardt<FunctorType,Scalar>::minimizeNumericalDiffOneStep(
 
     /* compute the qr factorization of the jacobian. */
 
-    ei_qrfac<Scalar>(m, n, fjac.data(), fjac.rows(), true, ipvt.data(), n, wa1.data(), wa2.data());
+    ei_qrfac<Scalar>(m, n, fjac.data(), fjac.rows(), true, ipvt.data(), wa1.data(), wa2.data());
     ipvt.cwise()-=1; // qrfac() creates ipvt with fortran convetion (1->n), convert it to c (0->n-1)
 
     /* on the first iteration and if mode is 1, scale according */
@@ -783,7 +783,7 @@ LevenbergMarquardt<FunctorType,Scalar>::minimizeOptimumStorageOneStep(
     }
     if (sing) {
         ipvt.cwise()+=1;
-        ei_qrfac<Scalar>(n, n, fjac.data(), fjac.rows(), true, ipvt.data(), n, wa1.data(), wa2.data());
+        ei_qrfac<Scalar>(n, n, fjac.data(), fjac.rows(), true, ipvt.data(), wa1.data(), wa2.data());
         ipvt.cwise()-=1; // qrfac() creates ipvt with fortran convetion (1->n), convert it to c (0->n-1)
         for (j = 0; j < n; ++j) {
             if (fjac(j,j) != 0.) {
diff --git a/unsupported/Eigen/src/NonLinear/qrfac.h b/unsupported/Eigen/src/NonLinear/qrfac.h
index c14fd0714..481fe57d8 100644
--- a/unsupported/Eigen/src/NonLinear/qrfac.h
+++ b/unsupported/Eigen/src/NonLinear/qrfac.h
@@ -1,7 +1,7 @@
 
 template <typename Scalar>
 void ei_qrfac(int m, int n, Scalar *a, int
-        lda, int pivot, int *ipvt, int /* lipvt */, Scalar *rdiag,
+        lda, int pivot, int *ipvt, Scalar *rdiag,
         Scalar *acnorm)
 {
     /* System generated locals */