diff --git a/builtin/add.c b/builtin/add.c
index 89dce56a240d69ccb224590bf134c9656d8a0522..c689f3725e84e88765ff7a0b79fc5ad338048fce 100644
--- a/builtin/add.c
+++ b/builtin/add.c
@@ -453,7 +453,7 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 			    && !file_exists(pathspec[i])) {
 				if (ignore_missing) {
 					int dtype = DT_UNKNOWN;
-					if (path_excluded(&check, pathspec[i], -1, &dtype))
+					if (is_path_excluded(&check, pathspec[i], -1, &dtype))
 						dir_add_ignored(&dir, pathspec[i], strlen(pathspec[i]));
 				} else
 					die(_("pathspec '%s' did not match any files"),
diff --git a/builtin/ls-files.c b/builtin/ls-files.c
index 31b3f2d9006e0f5703ca9fb37bea247012581c0e..ef7f99a9ed12944c2de3541e45b160967a73c869 100644
--- a/builtin/ls-files.c
+++ b/builtin/ls-files.c
@@ -203,7 +203,7 @@ static void show_ru_info(void)
 static int ce_excluded(struct path_exclude_check *check, struct cache_entry *ce)
 {
 	int dtype = ce_to_dtype(ce);
-	return path_excluded(check, ce->name, ce_namelen(ce), &dtype);
+	return is_path_excluded(check, ce->name, ce_namelen(ce), &dtype);
 }
 
 static void show_files(struct dir_struct *dir)
diff --git a/dir.c b/dir.c
index f31aa59fa30f21dc2fca1b5546530d099f2bcc46..f1c0abd182e43df312c9f2ed64fcccaad9017b6a 100644
--- a/dir.c
+++ b/dir.c
@@ -685,8 +685,8 @@ void path_exclude_check_clear(struct path_exclude_check *check)
  * A path to a directory known to be excluded is left in check->path to
  * optimize for repeated checks for files in the same excluded directory.
  */
-int path_excluded(struct path_exclude_check *check,
-		  const char *name, int namelen, int *dtype)
+int is_path_excluded(struct path_exclude_check *check,
+		     const char *name, int namelen, int *dtype)
 {
 	int i;
 	struct strbuf *path = &check->path;
diff --git a/dir.h b/dir.h
index 680c1eb6eaff6e01fec801f259405affdea05997..c59bad8851bed1505bdfbafecc213070f25ace32 100644
--- a/dir.h
+++ b/dir.h
@@ -123,7 +123,7 @@ struct path_exclude_check {
 };
 extern void path_exclude_check_init(struct path_exclude_check *, struct dir_struct *);
 extern void path_exclude_check_clear(struct path_exclude_check *);
-extern int path_excluded(struct path_exclude_check *, const char *, int namelen, int *dtype);
+extern int is_path_excluded(struct path_exclude_check *, const char *, int namelen, int *dtype);
 
 
 extern int add_excludes_from_file_to_list(const char *fname, const char *base, int baselen,
diff --git a/unpack-trees.c b/unpack-trees.c
index 33a581924e11167dc546bdf97c8d49460b43674e..3ac6370f991db5ecbc7ed12a36d5c25040eed265 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -1372,7 +1372,7 @@ static int check_ok_to_remove(const char *name, int len, int dtype,
 		return 0;
 
 	if (o->dir &&
-	    path_excluded(o->path_exclude_check, name, -1, &dtype))
+	    is_path_excluded(o->path_exclude_check, name, -1, &dtype))
 		/*
 		 * ce->name is explicitly excluded, so it is Ok to
 		 * overwrite it.