diff --git a/freeglut/freeglut/freeglut.dsp b/freeglut/freeglut/freeglut.dsp
index 717aaa1..fb6c72d 100644
--- a/freeglut/freeglut/freeglut.dsp
+++ b/freeglut/freeglut/freeglut.dsp
@@ -259,6 +259,10 @@ SOURCE=.\src\Common\freeglut_internal.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\src\mswin\freeglut_internal_mswin.h
+# End Source File
+# Begin Source File
+
 SOURCE=.\include\GL\freeglut_std.h
 # End Source File
 # Begin Source File
diff --git a/freeglut/freeglut/freeglut_static.dsp b/freeglut/freeglut/freeglut_static.dsp
index 56330d4..bd45df5 100644
--- a/freeglut/freeglut/freeglut_static.dsp
+++ b/freeglut/freeglut/freeglut_static.dsp
@@ -139,6 +139,10 @@ SOURCE=.\src\mswin\freeglut_structure_mswin.c
 SOURCE=.\src\mswin\freeglut_window_mswin.c
 # End Source File
 # End Group
+# Begin Source File
+
+SOURCE=.\src\mswin\freeglut_internal_mswin.h
+# End Source File
 # End Group
 # Begin Source File