diff --git a/RecoVertex/VertexPrimitives/interface/LinearizedTrackState.h b/RecoVertex/VertexPrimitives/interface/LinearizedTrackState.h
index e257827dd9a0c..d392092d936db 100644
--- a/RecoVertex/VertexPrimitives/interface/LinearizedTrackState.h
+++ b/RecoVertex/VertexPrimitives/interface/LinearizedTrackState.h
@@ -9,6 +9,8 @@
 #include "DataFormats/GeometryVector/interface/GlobalPoint.h"
 #include "DataFormats/TrajectoryState/interface/TrackCharge.h"
 #include "TrackingTools/TransientTrack/interface/TransientTrack.h"
+
+#define SMATRIX_USE_CONSTEXPR
 #include "Math/SMatrix.h"
 
 #include "RecoVertex/VertexPrimitives/interface/RefittedTrackState.h"
diff --git a/RecoVertex/VertexPrimitives/interface/VertexTrack.h b/RecoVertex/VertexPrimitives/interface/VertexTrack.h
index e0a28d0644ab0..fa1957e8d73ce 100644
--- a/RecoVertex/VertexPrimitives/interface/VertexTrack.h
+++ b/RecoVertex/VertexPrimitives/interface/VertexTrack.h
@@ -5,6 +5,9 @@
 #include "RecoVertex/VertexPrimitives/interface/VertexState.h"
 #include "RecoVertex/VertexPrimitives/interface/RefittedTrackState.h"
 #include "RecoVertex/VertexPrimitives/interface/VertexException.h"
+
+
+#define SMATRIX_USE_CONSTEXPR
 #include "Math/SMatrix.h"
 
 /** Track information relative to a track-to-vertex association. 
diff --git a/TrackingTools/GsfTools/interface/GsfMatrixTools.h b/TrackingTools/GsfTools/interface/GsfMatrixTools.h
index d3d11102b5c8e..a41055df8b0fd 100644
--- a/TrackingTools/GsfTools/interface/GsfMatrixTools.h
+++ b/TrackingTools/GsfTools/interface/GsfMatrixTools.h
@@ -1,6 +1,8 @@
 #ifndef GsfMatrixTools_h_
 #define GsfMatrixTools_h_
 
+#define SMATRIX_USE_CONSTEXPR
+
 #include "Math/SVector.h"
 #include "Math/SMatrix.h"
 
diff --git a/TrackingTools/GsfTools/interface/SingleGaussianState.h b/TrackingTools/GsfTools/interface/SingleGaussianState.h
index dd6791530f249..3f2386c6d3f5b 100644
--- a/TrackingTools/GsfTools/interface/SingleGaussianState.h
+++ b/TrackingTools/GsfTools/interface/SingleGaussianState.h
@@ -1,6 +1,8 @@
 #ifndef SingleGaussianState_H
 #define SingleGaussianState_H
 
+#define SMATRIX_USE_CONSTEXPR
+
 #include "Math/SVector.h"
 #include "Math/SMatrix.h"