diff --git a/src/insexpand.c b/src/insexpand.c
index 7a5298f..2a5f8e8 100644
--- a/src/insexpand.c
+++ b/src/insexpand.c
@@ -3581,6 +3581,7 @@
 
 		// Move leader to the file part
 		leader = last_sep + 1;
+		leader_len = STRLEN(leader);
 	    }
 	}
     }
@@ -3643,12 +3644,18 @@
 	    matches = sorted_matches;
 	    num_matches = fuzzy_indices.ga_len;
 	}
+	else if (leader_len > 0)
+	{
+	    FreeWild(num_matches, matches);
+	    num_matches = 0;
+	}
 
 	vim_free(compl_fuzzy_scores);
 	ga_clear(&fuzzy_indices);
     }
 
-    ins_compl_add_matches(num_matches, matches, p_fic || p_wic);
+    if (num_matches > 0)
+	ins_compl_add_matches(num_matches, matches, p_fic || p_wic);
 }
 
 /*
diff --git a/src/testdir/dumps/Test_pum_highlights_15.dump b/src/testdir/dumps/Test_pum_highlights_15.dump
new file mode 100644
index 0000000..e923b43
--- /dev/null
+++ b/src/testdir/dumps/Test_pum_highlights_15.dump
@@ -0,0 +1,20 @@
+|/+0&#ffffff0|n|o|n|_|e|x|i|t|_|f|o|l|d|e|r> @58
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|-+2#0000000&@1| |F|i|l|e| |n|a|m|e| |c|o|m|p|l|e|t|i|o|n| |(|^|F|^|N|^|P|)| |P+0#ffffff16#e000002|a|t@1|e|r|n| |n|o|t| |f|o|u|n|d| +0#0000000#ffffff0@24
diff --git a/src/testdir/test_popup.vim b/src/testdir/test_popup.vim
index 4c2fb45..38324c1 100644
--- a/src/testdir/test_popup.vim
+++ b/src/testdir/test_popup.vim
@@ -1493,6 +1493,11 @@
   call TermWait(buf, 50)
   call VerifyScreenDump(buf, 'Test_pum_highlights_11', {})
 
+  " issue #15357
+  call term_sendkeys(buf, "\<ESC>S/non_exit_folder\<C-X>\<C-F>")
+  call TermWait(buf, 50)
+  call VerifyScreenDump(buf, 'Test_pum_highlights_15', {})
+
   call term_sendkeys(buf, "\<C-E>\<Esc>")
   call TermWait(buf)
 
diff --git a/src/version.c b/src/version.c
index 417e400..31b0c24 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    631,
+/**/
     630,
 /**/
     629,