diff --git a/src/stage1/tokenizer.cpp b/src/stage1/tokenizer.cpp
index 49d5d80fb0..873a48b327 100644
--- a/src/stage1/tokenizer.cpp
+++ b/src/stage1/tokenizer.cpp
@@ -747,6 +747,9 @@ void tokenize(const char *source, Tokenization *out) {
                     case 'u':
                         t.state = TokenizeState_char_literal_unicode_escape_saw_u;
                         break;
+                    case 'U':
+                        invalid_char_error(&t, c);
+                        break;
                     default:
                         t.state = TokenizeState_char_literal_end;
                         break;
@@ -785,7 +788,7 @@ void tokenize(const char *source, Tokenization *out) {
                         break;
                     case '}':
                         if (seen_escape_digits == 0) {
-                            tokenize_error(&t, "missing unicode escape sequence");
+                            tokenize_error(&t, "empty unicode escape sequence");
                             break;
                         }
                         t.state = TokenizeState_char_literal_end;
diff --git a/test/compile_errors.zig b/test/compile_errors.zig
index 7e63460bfe..b2545d31f5 100644
--- a/test/compile_errors.zig
+++ b/test/compile_errors.zig
@@ -34,9 +34,9 @@ pub fn addCases(cases: *tests.CompileErrorContext) void {
         \\    const c: *S = &.{};
         \\}
     , &[_][]const u8{
-        "mp.zig:2:31: error: expected type '[][]const u8', found '*const struct:2:31'",
-        "mp.zig:5:33: error: expected type '*[2][]const u8', found '*const struct:5:33'",
-        "mp.zig:9:21: error: expected type '*S', found '*const struct:9:21'",
+        "tmp.zig:2:31: error: expected type '[][]const u8', found '*const struct:2:31'",
+        "tmp.zig:5:33: error: expected type '*[2][]const u8', found '*const struct:5:33'",
+        "tmp.zig:9:21: error: expected type '*S', found '*const struct:9:21'",
     });
 
     cases.add("@Type() union payload is undefined",
@@ -8416,6 +8416,6 @@ pub fn addCases(cases: *tests.CompileErrorContext) void {
         \\    var sequence = "repeat".*** 10;
         \\}
     , &[_][]const u8{
-        "tmp.zig:2:30: error: `.*` can't be followed by `*`. Are you missing a space?",
+        "tmp.zig:2:30: error: `.*` cannot be followed by `*`. Are you missing a space?",
     });
 }