diff --git a/src/structs.h b/src/structs.h
index 69494dd..7c51c72 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1934,6 +1934,7 @@
 
     char_u	*uf_name_exp;	// if "uf_name[]" starts with SNR the name with
 				// "<SNR>" as a string, otherwise NULL
+    size_t	uf_namelen;	// length of uf_name (excluding the NUL)
     char_u	uf_name[4];	// name of function (actual size equals name);
 				// can start with <SNR>123_ (<SNR> is K_SPECIAL
 				// KS_EXTRA KE_SNR)