diff --git a/src/optionstr.c b/src/optionstr.c
index 417f785..b6249a2 100644
--- a/src/optionstr.c
+++ b/src/optionstr.c
@@ -81,6 +81,8 @@
 static char *(p_swb_values[]) = {"useopen", "usetab", "split", "newtab", "vsplit", "uselast", NULL};
 static char *(p_spk_values[]) = {"cursor", "screen", "topline", NULL};
 static char *(p_tc_values[]) = {"followic", "ignore", "match", "followscs", "smart", NULL};
+// Keep in sync with TCL_ flags in option.h
+static char *(p_tcl_values[]) = {"left", "uselast", NULL};
 #if defined(FEAT_TOOLBAR) && !defined(FEAT_GUI_MSWIN)
 static char *(p_toolbar_values[]) = {"text", "icons", "tooltips", "horiz", NULL};
 #endif
@@ -166,6 +168,7 @@
     (void)opt_strings_flags(p_tbis, p_tbis_values, &tbis_flags, FALSE);
 #endif
     (void)opt_strings_flags(p_swb, p_swb_values, &swb_flags, TRUE);
+    (void)opt_strings_flags(p_tcl, p_tcl_values, &tcl_flags, TRUE);
 }
 
 #if defined(FEAT_EVAL) || defined(PROTO)
@@ -3669,6 +3672,26 @@
 	    matches);
 }
 
+/*
+ * The 'tabclose' option is changed.
+ */
+    char *
+did_set_tabclose(optset_T *args UNUSED)
+{
+    return did_set_opt_flags(p_tcl, p_tcl_values, &tcl_flags, TRUE);
+}
+
+    int
+expand_set_tabclose(optexpand_T *args, int *numMatches, char_u ***matches)
+{
+    return expand_set_opt_string(
+	    args,
+	    p_tcl_values,
+	    ARRAY_LENGTH(p_tcl_values) - 1,
+	    numMatches,
+	    matches);
+}
+
 #if defined(FEAT_STL_OPT) || defined(PROTO)
 /*
  * The 'tabline' option is changed.