diff --git a/src/Mod/Raytracing/App/LuxProject.cpp b/src/Mod/Raytracing/App/LuxProject.cpp
index 7cbaa85440..19bf837c7b 100644
--- a/src/Mod/Raytracing/App/LuxProject.cpp
+++ b/src/Mod/Raytracing/App/LuxProject.cpp
@@ -24,6 +24,7 @@
 
 #ifndef _PreComp_
 # include <Standard.hxx>
+# include <fstream>
 # include <iosfwd>
 # include <string>
 # include <vector>
diff --git a/src/Mod/Raytracing/App/PreCompiled.h b/src/Mod/Raytracing/App/PreCompiled.h
index db9a8d0e17..ab36095898 100644
--- a/src/Mod/Raytracing/App/PreCompiled.h
+++ b/src/Mod/Raytracing/App/PreCompiled.h
@@ -28,6 +28,7 @@
 #ifdef _PreComp_
 
 // STL
+#include <fstream>
 #include <iosfwd>
 #include <sstream>
 #include <vector>