diff --git a/src/curvature.cpp b/src/curvature.cpp
index 1c10814..b6893a3 100644
--- a/src/curvature.cpp
+++ b/src/curvature.cpp
@@ -54,7 +54,9 @@ QuadPatch Courbures::fit_quad(MyMesh::VertexHandle vh) {
     static std::vector<MyMesh::VertexHandle> neigh;
 	neigh.clear();
 	get_two_neighborhood(neigh, vh);
-    if (neigh.size() < 5) throw "Quad fitting: not enough neighbors";
+    if (neigh.size() < 5) {
+		throw std::runtime_error("Quad fitting: not enough neighbors");
+	}
 
     // Calcul de la matrice de changement de base
 	Eigen::Vector3d Oz(0,0,1);