diff --git a/src/Mod/Import/App/AppImportPy.cpp b/src/Mod/Import/App/AppImportPy.cpp
index ce9d20fecc..496a750647 100644
--- a/src/Mod/Import/App/AppImportPy.cpp
+++ b/src/Mod/Import/App/AppImportPy.cpp
@@ -350,7 +350,7 @@ static PyObject * importAssembly(PyObject *self, PyObject *args)
                 aReader.SetNameMode(true);
                 aReader.SetLayerMode(true);
                 if (aReader.ReadFile((Standard_CString)(name8bit.c_str())) != IFSelect_RetDone) {
-                    PyErr_SetString(PyExc_Exception, "cannot read STEP file");
+                    PyErr_SetString(PyExc_IOError, "cannot read STEP file");
                     return 0;
                 }
 
@@ -379,7 +379,7 @@ static PyObject * importAssembly(PyObject *self, PyObject *args)
                 aReader.SetNameMode(true);
                 aReader.SetLayerMode(true);
                 if (aReader.ReadFile((Standard_CString)(name8bit.c_str())) != IFSelect_RetDone) {
-                    PyErr_SetString(PyExc_Exception, "cannot read IGES file");
+                    PyErr_SetString(PyExc_IOError, "cannot read IGES file");
                     return 0;
                 }
 
@@ -400,7 +400,7 @@ static PyObject * importAssembly(PyObject *self, PyObject *args)
             }
         }
         else {
-            PyErr_SetString(PyExc_Exception, "no supported file format");
+            PyErr_SetString(PyExc_RuntimeError, "no supported file format");
             return 0;
         }
 
@@ -411,7 +411,7 @@ static PyObject * importAssembly(PyObject *self, PyObject *args)
     }
     catch (Standard_Failure) {
         Handle(Standard_Failure) e = Standard_Failure::Caught();
-        PyErr_SetString(PyExc_Exception, e->GetMessageString());
+        PyErr_SetString(PyExc_RuntimeError, e->GetMessageString());
         return 0;
     }
     PY_CATCH
diff --git a/src/Mod/Part/App/Geom2d/Curve2dPyImp.cpp b/src/Mod/Part/App/Geom2d/Curve2dPyImp.cpp
index ebdd2572aa..9cf0df749e 100644
--- a/src/Mod/Part/App/Geom2d/Curve2dPyImp.cpp
+++ b/src/Mod/Part/App/Geom2d/Curve2dPyImp.cpp
@@ -912,10 +912,10 @@ PyObject* Curve2dPy::intersectCC(PyObject *args)
     }
     catch (Standard_Failure) {
         Handle(Standard_Failure) e = Standard_Failure::Caught();
-        PyErr_SetString(PyExc_Exception, e->GetMessageString());
+        PyErr_SetString(PyExc_RuntimeError, e->GetMessageString());
         return 0;
     }
 
-    PyErr_SetString(PyExc_Exception, "Geometry is not a curve");
+    PyErr_SetString(PyExc_TypeError, "Geometry is not a curve");
     return 0;
 }
diff --git a/src/Mod/Part/App/GeometryCurvePyImp.cpp b/src/Mod/Part/App/GeometryCurvePyImp.cpp
index ce675943bf..0f6fd8a0df 100644
--- a/src/Mod/Part/App/GeometryCurvePyImp.cpp
+++ b/src/Mod/Part/App/GeometryCurvePyImp.cpp
@@ -754,7 +754,7 @@ PyObject* GeometryCurvePy::intersectCS(PyObject *args)
             Handle(Geom_Surface) surf = Handle(Geom_Surface)::DownCast(static_cast<GeometryPy*>(p)->getGeometryPtr()->handle());
             GeomAPI_IntCS intersector(curve, surf);
             if (!intersector.IsDone()) {
-                PyErr_SetString(PyExc_Exception, "Intersection of curve and surface failed");
+                PyErr_SetString(PyExc_RuntimeError, "Intersection of curve and surface failed");
                 return 0;
             }
 
@@ -777,11 +777,11 @@ PyObject* GeometryCurvePy::intersectCS(PyObject *args)
     }
     catch (Standard_Failure) {
         Handle(Standard_Failure) e = Standard_Failure::Caught();
-        PyErr_SetString(PyExc_Exception, e->GetMessageString());
+        PyErr_SetString(PyExc_RuntimeError, e->GetMessageString());
         return 0;
     }
 
-    PyErr_SetString(PyExc_Exception, "Geometry is not a curve");
+    PyErr_SetString(PyExc_TypeError, "Geometry is not a curve");
     return 0;
 }
 
@@ -815,11 +815,11 @@ PyObject* GeometryCurvePy::intersectCC(PyObject *args)
     }
     catch (Standard_Failure) {
         Handle(Standard_Failure) e = Standard_Failure::Caught();
-        PyErr_SetString(PyExc_Exception, e->GetMessageString());
+        PyErr_SetString(PyExc_RuntimeError, e->GetMessageString());
         return 0;
     }
 
-    PyErr_SetString(PyExc_Exception, "Geometry is not a curve");
+    PyErr_SetString(PyExc_TypeError, "Geometry is not a curve");
     return 0;
 }
 
@@ -846,10 +846,10 @@ PyObject* GeometryCurvePy::intersect(PyObject *args)
     }
     catch (Standard_Failure) {
         Handle(Standard_Failure) e = Standard_Failure::Caught();
-        PyErr_SetString(PyExc_Exception, e->GetMessageString());
+        PyErr_SetString(PyExc_RuntimeError, e->GetMessageString());
         return 0;
     }
 
-    PyErr_SetString(PyExc_Exception, "Geometry is not a curve");
+    PyErr_SetString(PyExc_TypeError, "Geometry is not a curve");
     return 0;
 }
diff --git a/src/Mod/Part/App/GeometrySurfacePyImp.cpp b/src/Mod/Part/App/GeometrySurfacePyImp.cpp
index 19b5350938..f8ca8b1527 100644
--- a/src/Mod/Part/App/GeometrySurfacePyImp.cpp
+++ b/src/Mod/Part/App/GeometrySurfacePyImp.cpp
@@ -536,7 +536,7 @@ PyObject* GeometrySurfacePy::intersectSS(PyObject *args)
             Handle(Geom_Surface) surf2 = Handle(Geom_Surface)::DownCast(static_cast<GeometryPy*>(p)->getGeometryPtr()->handle());
             GeomAPI_IntSS intersector(surf1, surf2, prec);
             if (!intersector.IsDone()) {
-                PyErr_SetString(PyExc_Exception, "Intersection of surfaces failed");
+                PyErr_SetString(PyExc_RuntimeError, "Intersection of surfaces failed");
                 return 0;
             }
 
@@ -551,11 +551,11 @@ PyObject* GeometrySurfacePy::intersectSS(PyObject *args)
     }
     catch (Standard_Failure) {
         Handle(Standard_Failure) e = Standard_Failure::Caught();
-        PyErr_SetString(PyExc_Exception, e->GetMessageString());
+        PyErr_SetString(PyExc_RuntimeError, e->GetMessageString());
         return 0;
     }
 
-    PyErr_SetString(PyExc_Exception, "intersectSS(): Geometry is not a surface");
+    PyErr_SetString(PyExc_TypeError, "intersectSS(): Geometry is not a surface");
     return 0;
 }
 
@@ -588,10 +588,10 @@ PyObject* GeometrySurfacePy::intersect(PyObject *args)
     }
     catch (Standard_Failure) {
         Handle(Standard_Failure) e = Standard_Failure::Caught();
-        PyErr_SetString(PyExc_Exception, e->GetMessageString());
+        PyErr_SetString(PyExc_RuntimeError, e->GetMessageString());
         return 0;
     }
 
-    PyErr_SetString(PyExc_Exception, "intersect(): Geometry is not a surface");
+    PyErr_SetString(PyExc_TypeError, "intersect(): Geometry is not a surface");
     return 0;
 }