diff --git a/compat/fsmonitor/fsm-health-win32.c b/compat/fsmonitor/fsm-health-win32.c
index 2526ad9194f626..2c3d7e4b2ae79a 100644
--- a/compat/fsmonitor/fsm-health-win32.c
+++ b/compat/fsmonitor/fsm-health-win32.c
@@ -51,7 +51,7 @@ struct fsm_health_data
 
 	struct wt_moved
 	{
-		wchar_t wpath[MAX_PATH + 1];
+		wchar_t wpath[MAX_LONG_PATH + 1];
 		BY_HANDLE_FILE_INFORMATION bhfi;
 	} wt_moved;
 };
@@ -178,8 +178,8 @@ static int has_worktree_moved(struct fsmonitor_daemon_state *state,
 		return 0;
 
 	case CTX_INIT:
-		if (xutftowcs_path(data->wt_moved.wpath,
-				   state->path_worktree_watch.buf) < 0) {
+		if (xutftowcs_long_path(data->wt_moved.wpath,
+					state->path_worktree_watch.buf) < 0) {
 			error(_("could not convert to wide characters: '%s'"),
 			      state->path_worktree_watch.buf);
 			return -1;
diff --git a/compat/fsmonitor/fsm-listen-win32.c b/compat/fsmonitor/fsm-listen-win32.c
index 8406f8277dc035..eb619d3b980b66 100644
--- a/compat/fsmonitor/fsm-listen-win32.c
+++ b/compat/fsmonitor/fsm-listen-win32.c
@@ -25,7 +25,7 @@ struct one_watch
 	DWORD count;
 
 	struct strbuf path;
-	wchar_t wpath_longname[MAX_PATH + 1];
+	wchar_t wpath_longname[MAX_LONG_PATH + 1];
 	DWORD wpath_longname_len;
 
 	HANDLE hDir;
@@ -128,8 +128,8 @@ static int normalize_path_in_utf8(wchar_t *wpath, DWORD wpath_len,
  */
 static void check_for_shortnames(struct one_watch *watch)
 {
-	wchar_t buf_in[MAX_PATH + 1];
-	wchar_t buf_out[MAX_PATH + 1];
+	wchar_t buf_in[MAX_LONG_PATH + 1];
+	wchar_t buf_out[MAX_LONG_PATH + 1];
 	wchar_t *last_slash = NULL;
 	wchar_t *last_bslash = NULL;
 	wchar_t *last;
@@ -138,7 +138,7 @@ static void check_for_shortnames(struct one_watch *watch)
 	wcscpy(buf_in, watch->wpath_longname);
 	wcscpy(buf_in + watch->wpath_longname_len, L".git");
 
-	if (!GetShortPathNameW(buf_in, buf_out, MAX_PATH))
+	if (!GetShortPathNameW(buf_in, buf_out, MAX_LONG_PATH))
 		return;
 
 	last_slash = wcsrchr(buf_out, L'/');
@@ -196,8 +196,8 @@ static enum get_relative_result get_relative_longname(
 	const wchar_t *wpath, DWORD wpath_len,
 	wchar_t *wpath_longname)
 {
-	wchar_t buf_in[2 * MAX_PATH + 1];
-	wchar_t buf_out[MAX_PATH + 1];
+	wchar_t buf_in[2 * MAX_LONG_PATH + 1];
+	wchar_t buf_out[MAX_LONG_PATH + 1];
 	DWORD root_len;
 
 	/* Build L"<wt-root-path>/<event-rel-path>" */
@@ -211,7 +211,7 @@ static enum get_relative_result get_relative_longname(
 	 * shortname or a longname.  This routine allows either to be
 	 * given as input.
 	 */
-	if (!GetLongPathNameW(buf_in, buf_out, MAX_PATH)) {
+	if (!GetLongPathNameW(buf_in, buf_out, MAX_LONG_PATH)) {
 		/*
 		 * The shortname to longname conversion can fail for
 		 * various reasons, for example if the file has been
@@ -271,10 +271,10 @@ static struct one_watch *create_watch(struct fsmonitor_daemon_state *state,
 		FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE;
 	HANDLE hDir;
 	DWORD len_longname;
-	wchar_t wpath[MAX_PATH + 1];
-	wchar_t wpath_longname[MAX_PATH + 1];
+	wchar_t wpath[MAX_LONG_PATH + 1];
+	wchar_t wpath_longname[MAX_LONG_PATH + 1];
 
-	if (xutftowcs_path(wpath, path) < 0) {
+	if (xutftowcs_long_path(wpath, path) < 0) {
 		error(_("could not convert to wide characters: '%s'"), path);
 		return NULL;
 	}
@@ -289,7 +289,7 @@ static struct one_watch *create_watch(struct fsmonitor_daemon_state *state,
 		return NULL;
 	}
 
-	if (!GetLongPathNameW(wpath, wpath_longname, MAX_PATH)) {
+	if (!GetLongPathNameW(wpath, wpath_longname, MAX_LONG_PATH)) {
 		error(_("[GLE %ld] could not get longname of '%s'"),
 		      GetLastError(), path);
 		CloseHandle(hDir);
@@ -518,7 +518,7 @@ static int process_worktree_events(struct fsmonitor_daemon_state *state)
 	struct string_list cookie_list = STRING_LIST_INIT_DUP;
 	struct fsmonitor_batch *batch = NULL;
 	const char *p = watch->buffer;
-	wchar_t wpath_longname[MAX_PATH + 1];
+	wchar_t wpath_longname[MAX_LONG_PATH + 1];
 
 	/*
 	 * If the kernel gets more events than will fit in the kernel
diff --git a/compat/fsmonitor/fsm-settings-win32.c b/compat/fsmonitor/fsm-settings-win32.c
index 77156c0ca20ea4..d775c082451d8a 100644
--- a/compat/fsmonitor/fsm-settings-win32.c
+++ b/compat/fsmonitor/fsm-settings-win32.c
@@ -76,8 +76,8 @@ static enum fsmonitor_reason is_virtual(struct repository *r)
  */
 static enum fsmonitor_reason is_remote(struct repository *r)
 {
-	wchar_t wpath[MAX_PATH];
-	wchar_t wfullpath[MAX_PATH];
+	wchar_t wpath[MAX_LONG_PATH];
+	wchar_t wfullpath[MAX_LONG_PATH];
 	size_t wlen;
 	UINT driveType;
 
@@ -85,7 +85,7 @@ static enum fsmonitor_reason is_remote(struct repository *r)
 	 * Do everything in wide chars because the drive letter might be
 	 * a multi-byte sequence.  See win32_has_dos_drive_prefix().
 	 */
-	if (xutftowcs_path(wpath, r->worktree) < 0)
+	if (xutftowcs_long_path(wpath, r->worktree) < 0)
 		return FSMONITOR_REASON_ZERO;
 
 	/*
@@ -103,7 +103,7 @@ static enum fsmonitor_reason is_remote(struct repository *r)
 	 * slashes to backslashes.  This is essential to get GetDriveTypeW()
 	 * correctly handle some UNC "\\server\share\..." paths.
 	 */
-	if (!GetFullPathNameW(wpath, MAX_PATH, wfullpath, NULL))
+	if (!GetFullPathNameW(wpath, MAX_LONG_PATH, wfullpath, NULL))
 		return FSMONITOR_REASON_ZERO;
 
 	driveType = GetDriveTypeW(wfullpath);