diff --git a/src/vim.h b/src/vim.h
index da2835c..212b7e7 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -881,6 +881,7 @@
 #define WILD_NOERROR		    0x800  // sets EW_NOERROR
 #define WILD_BUFLASTUSED	    0x1000
 #define BUF_DIFF_FILTER		    0x2000
+#define WILD_KEEP_SOLE_ITEM	    0x4000
 
 // Flags for expand_wildcards()
 #define EW_DIR		0x01	// include directory names