diff --git a/reactos/w32api/include/shlobj.h b/reactos/w32api/include/shlobj.h
index d100bc06abd..55308ffe07e 100644
--- a/reactos/w32api/include/shlobj.h
+++ b/reactos/w32api/include/shlobj.h
@@ -385,6 +385,9 @@ extern "C" {
 #define PCS_REMOVEDCHAR		0x00000002
 #define PCS_TRUNCATED		0x00000004
 #define PCS_PATHTOOLONG		0x00000008
+#define SHFMT_ERROR		0xFFFFFFFFL
+#define SHFMT_CANCEL		0xFFFFFFFEL
+#define SHFMT_NOFORMAT		0xFFFFFFFDL
 
 typedef ULONG SFGAOF;
 typedef DWORD SHGDNF;