diff --git a/bisect.c b/bisect.c
index 37200b41f1..59f1aeebe3 100644
--- a/bisect.c
+++ b/bisect.c
@@ -216,11 +216,12 @@ static struct commit_list *best_bisection_sorted(struct commit_list *list, int n
 	}
 	qsort(array, cnt, sizeof(*array), compare_commit_dist);
 	for (p = list, i = 0; i < cnt; i++) {
-		struct name_decoration *r = xmalloc(sizeof(*r) + 100);
+		char buf[100]; /* enough for dist=%d */
 		struct object *obj = &(array[i].commit->object);
 
-		sprintf(r->name, "dist=%d", array[i].distance);
-		r->next = add_decoration(&name_decoration, obj, r);
+		snprintf(buf, sizeof(buf), "dist=%d", array[i].distance);
+		add_name_decoration(DECORATION_NONE, buf, obj);
+
 		p->item = array[i].commit;
 		p = p->next;
 	}
diff --git a/commit.h b/commit.h
index a9f177ba48..06c06df3ec 100644
--- a/commit.h
+++ b/commit.h
@@ -34,6 +34,18 @@ struct name_decoration {
 	char name[1];
 };
 
+enum decoration_type {
+	DECORATION_NONE = 0,
+	DECORATION_REF_LOCAL,
+	DECORATION_REF_REMOTE,
+	DECORATION_REF_TAG,
+	DECORATION_REF_STASH,
+	DECORATION_REF_HEAD,
+	DECORATION_GRAFTED,
+};
+
+void add_name_decoration(enum decoration_type type, const char *name, struct object *obj);
+
 struct commit *lookup_commit(const unsigned char *sha1);
 struct commit *lookup_commit_reference(const unsigned char *sha1);
 struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
diff --git a/log-tree.c b/log-tree.c
index 08970bf46e..f7c6b035c9 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -14,16 +14,6 @@
 
 struct decoration name_decoration = { "object names" };
 
-enum decoration_type {
-	DECORATION_NONE = 0,
-	DECORATION_REF_LOCAL,
-	DECORATION_REF_REMOTE,
-	DECORATION_REF_TAG,
-	DECORATION_REF_STASH,
-	DECORATION_REF_HEAD,
-	DECORATION_GRAFTED,
-};
-
 static char decoration_colors[][COLOR_MAXLEN] = {
 	GIT_COLOR_RESET,
 	GIT_COLOR_BOLD_GREEN,	/* REF_LOCAL */
@@ -84,7 +74,7 @@ int parse_decorate_color_config(const char *var, const int ofs, const char *valu
 #define decorate_get_color_opt(o, ix) \
 	decorate_get_color((o)->use_color, ix)
 
-static void add_name_decoration(enum decoration_type type, const char *name, struct object *obj)
+void add_name_decoration(enum decoration_type type, const char *name, struct object *obj)
 {
 	int nlen = strlen(name);
 	struct name_decoration *res = xmalloc(sizeof(struct name_decoration) + nlen);