diff --git a/src/Mod/Path/App/PathSegmentWalker.cpp b/src/Mod/Path/App/PathSegmentWalker.cpp
index e9ac092e5a..284cc1c49a 100644
--- a/src/Mod/Path/App/PathSegmentWalker.cpp
+++ b/src/Mod/Path/App/PathSegmentWalker.cpp
@@ -21,6 +21,7 @@
  *                                                                         *
  ***************************************************************************
  */
+#include "PreCompiled.h"
 #include "PathSegmentWalker.h"
 
 #include <App/Application.h>
diff --git a/src/Mod/Path/App/PathSegmentWalker.h b/src/Mod/Path/App/PathSegmentWalker.h
index 50299f14fc..d0be7dbafe 100644
--- a/src/Mod/Path/App/PathSegmentWalker.h
+++ b/src/Mod/Path/App/PathSegmentWalker.h
@@ -33,7 +33,7 @@ namespace Path
  * PathSegmentVisitor is the companion class to PathSegmentWalker. Its members are called
  * with the segmented points of each command.
  */
-class PathSegmentVisitor
+class PathExport PathSegmentVisitor
 {
   public:
     virtual ~PathSegmentVisitor();
@@ -53,7 +53,7 @@ class PathSegmentVisitor
  * appropriate member of the provided PathSegmentVisitor.
  * All non-movement commands are processed accordingly if they affect the movement commands.
  */
-class PathSegmentWalker
+class PathExport PathSegmentWalker
 {
 public:
     PathSegmentWalker(const Toolpath &tp_);