diff --git a/pandatool/src/xfile/Sources.pp b/pandatool/src/xfile/Sources.pp
index 989a1d99f6..c1d93d2331 100644
--- a/pandatool/src/xfile/Sources.pp
+++ b/pandatool/src/xfile/Sources.pp
@@ -11,7 +11,7 @@
     dtoolconfig dtool pystub \
 
   #define WIN_SYS_LIBS \
-    d3dxof.lib
+    d3dxof.lib dxguid.lib
 
   #define SOURCES \
     config_xfile.cxx config_xfile.h \
diff --git a/pandatool/src/xfileprogs/Sources.pp b/pandatool/src/xfileprogs/Sources.pp
index 389ccf8af2..e6ae1f3001 100644
--- a/pandatool/src/xfileprogs/Sources.pp
+++ b/pandatool/src/xfileprogs/Sources.pp
@@ -11,7 +11,7 @@
     dtoolconfig dtool pystub \
 
   #define WIN_SYS_LIBS \
-    d3dxof.lib
+    d3dxof.lib dxguid.lib
 
   #define SOURCES \
     eggToX.cxx eggToX.h