diff --git a/src/App/FeatureTest.cpp b/src/App/FeatureTest.cpp
index 6827aaeee4..a24f6046f8 100644
--- a/src/App/FeatureTest.cpp
+++ b/src/App/FeatureTest.cpp
@@ -23,6 +23,7 @@
 
 #include "PreCompiled.h"
 #ifndef _PreComp_
+# include <stdexcept>
 #endif
 
 
@@ -164,7 +165,7 @@ doc.recompute()
     switch(ExceptionType.getValue())
     {
         case 0: break;
-        case 1: throw "Test Exception";
+        case 1: throw std::runtime_error("Test Exception");
         case 2: throw Base::RuntimeError("FeatureTestException::execute(): Testexception");
 #if 0 // only allow these error types on purpose
         case 3: *i=0;printf("%i",*i);break;                 // seg-fault
diff --git a/src/Base/MemDebug.cpp b/src/Base/MemDebug.cpp
index 993d9d2080..5341d22f83 100644
--- a/src/Base/MemDebug.cpp
+++ b/src/Base/MemDebug.cpp
@@ -122,17 +122,17 @@ MemDebug::MemDebug()
 
    // Open a log file for the hook functions to use
    if ( logFile != NULL )
-     throw "Base::MemDebug::MemDebug():38: Don't call the constructor by your self!";
+     throw std::runtime_error("Base::MemDebug::MemDebug():38: Don't call the constructor by your self!");
 #if (_MSC_VER >= 1400)
    fopen_s( &logFile, "MemLog.txt", "w" );
    if ( logFile == NULL )
-     throw "Base::MemDebug::MemDebug():41: File IO Error. Can't open log file...";
+     throw std::runtime_error("Base::MemDebug::MemDebug():41: File IO Error. Can't open log file...");
    _strtime_s( timeStr, 15 );
    _strdate_s( dateStr, 15 );
 #elif (_MSC_VER >= 1200)
    logFile = fopen( "MemLog.txt", "w" );
    if ( logFile == NULL )
-     throw "Base::MemDebug::MemDebug():41: File IO Error. Can't open log file...";
+     throw std::runtime_error("Base::MemDebug::MemDebug():41: File IO Error. Can't open log file...");
    _strtime( timeStr );
    _strdate( dateStr );
 #endif
diff --git a/src/Mod/MeshPart/App/MeshAlgos.cpp b/src/Mod/MeshPart/App/MeshAlgos.cpp
index c52ef1c068..f7d0b19044 100644
--- a/src/Mod/MeshPart/App/MeshAlgos.cpp
+++ b/src/Mod/MeshPart/App/MeshAlgos.cpp
@@ -191,12 +191,12 @@ MeshCore::MeshKernel* MeshAlgos::boolean(MeshCore::MeshKernel* pMesh1,
   if (!gts_surface_is_orientable (s1)) {
     gts_object_destroy (GTS_OBJECT (s1));
     gts_object_destroy (GTS_OBJECT (s2));
-    throw "surface 1 is not an orientable manifold\n";
+    throw std::runtime_error("surface 1 is not an orientable manifold\n");
   }
   if (!gts_surface_is_orientable (s2)) {
     gts_object_destroy (GTS_OBJECT (s1));
     gts_object_destroy (GTS_OBJECT (s2));
-    throw "surface 2 is not an orientable manifold\n";
+    throw std::runtime_error("surface 2 is not an orientable manifold\n");
   }
 
   /* check that the surfaces are not self-intersecting */
@@ -211,7 +211,7 @@ MeshCore::MeshKernel* MeshAlgos::boolean(MeshCore::MeshKernel* pMesh1,
       gts_object_destroy (GTS_OBJECT (self_intersects));
       gts_object_destroy (GTS_OBJECT (s1));
       gts_object_destroy (GTS_OBJECT (s2));
-      throw "surface is self-intersecting\n";
+      throw std::runtime_error("surface is self-intersecting\n");
     }
     self_intersects = gts_surface_is_self_intersecting (s2);
     if (self_intersects != NULL) {
@@ -221,7 +221,7 @@ MeshCore::MeshKernel* MeshAlgos::boolean(MeshCore::MeshKernel* pMesh1,
       gts_object_destroy (GTS_OBJECT (self_intersects));
       gts_object_destroy (GTS_OBJECT (s1));
       gts_object_destroy (GTS_OBJECT (s2));
-      throw "surface is self-intersecting\n";
+      throw std::runtime_error("surface is self-intersecting\n");
     }
   }
 
@@ -285,7 +285,7 @@ MeshCore::MeshKernel* MeshAlgos::boolean(MeshCore::MeshKernel* pMesh1,
       gts_object_destroy (GTS_OBJECT (si));
       gts_bb_tree_destroy (tree1, true);
       gts_bb_tree_destroy (tree2, true);
-      throw "the resulting surface is self-intersecting\n";
+      throw std::runtime_error("the resulting surface is self-intersecting\n");
     }
   }
   // display summary information about the resulting surface 
diff --git a/src/Mod/Path/libarea/clipper.cpp b/src/Mod/Path/libarea/clipper.cpp
index 5a0931a049..e1277f0583 100644
--- a/src/Mod/Path/libarea/clipper.cpp
+++ b/src/Mod/Path/libarea/clipper.cpp
@@ -891,7 +891,7 @@ void RangeTest(const IntPoint& Pt, bool& useFullRange)
   if (useFullRange)
   {
     if (Pt.X > hiRange || Pt.Y > hiRange || -Pt.X > hiRange || -Pt.Y > hiRange) 
-      throw "Coordinate outside allowed range";
+      throw std::range_error("Coordinate outside allowed range");
   }
   else if (Pt.X > loRange|| Pt.Y > loRange || -Pt.X > loRange || -Pt.Y > loRange) 
   {