diff --git a/src/optiondefs.h b/src/optiondefs.h
index 1a09e1c..4ee2e20 100644
--- a/src/optiondefs.h
+++ b/src/optiondefs.h
@@ -215,6 +215,7 @@
 # define PV_STL		OPT_BOTH(OPT_WIN(WV_STL))
 #endif
 #define PV_UL		OPT_BOTH(OPT_BUF(BV_UL))
+# define PV_WFB		OPT_WIN(WV_WFB)
 # define PV_WFH		OPT_WIN(WV_WFH)
 # define PV_WFW		OPT_WIN(WV_WFW)
 #define PV_WRAP		OPT_WIN(WV_WRAP)
@@ -2850,6 +2851,9 @@
     {"window",	    "wi",   P_NUM|P_VI_DEF,
 			    (char_u *)&p_window, PV_NONE, did_set_window, NULL,
 			    {(char_u *)0L, (char_u *)0L} SCTX_INIT},
+    {"winfixbuf", "wfb", P_BOOL|P_VI_DEF|P_RWIN,
+			    (char_u *)VAR_WIN, PV_WFB, NULL, NULL,
+			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},
     {"winfixheight", "wfh", P_BOOL|P_VI_DEF|P_RSTAT,
 			    (char_u *)VAR_WIN, PV_WFH, NULL, NULL,
 			    {(char_u *)FALSE, (char_u *)0L} SCTX_INIT},