diff --git a/src/SMESH/SMESH_Mesh.cxx b/src/SMESH/SMESH_Mesh.cxx
index 2a19d6e73..4e7368ab6 100644
--- a/src/SMESH/SMESH_Mesh.cxx
+++ b/src/SMESH/SMESH_Mesh.cxx
@@ -361,6 +361,7 @@ double SMESH_Mesh::GetShapeDiagonalSize(const TopoDS_Shape & aShape)
     bool isPrecise = false;
     if ( nbFaces < maxNbFaces )
       try {
+        OCC_CATCH_SIGNALS;
         GEOMUtils::PreciseBoundingBox( aShape, Box );
         isPrecise = true;
       }