diff --git a/src/server/inspections/compiler/utils.v b/src/server/inspections/compiler/utils.v
index c4342f7c..e8cb1eba 100644
--- a/src/server/inspections/compiler/utils.v
+++ b/src/server/inspections/compiler/utils.v
@@ -97,7 +97,7 @@ fn exec_compiler_diagnostics(compiler_path string, uri lsp.DocumentUri) ?[]inspe
 				...report
 				filepath: os.join_path_single(dir_path, report.filepath)
 			}
-		} else if start_idx := dir_path.index_last(file_dir_path) {
+		} else if start_idx := dir_path.last_index(file_dir_path) {
 			// reported file appears to be in a subdirectory of dir_path
 			report = inspections.Report{
 				...report
diff --git a/src/tests/testdata/benchmarks/checker.v b/src/tests/testdata/benchmarks/checker.v
index 3135705b..18cecd6e 100644
--- a/src/tests/testdata/benchmarks/checker.v
+++ b/src/tests/testdata/benchmarks/checker.v
@@ -484,7 +484,7 @@ fn (mut c Checker) check_valid_snake_case(name string, identifier string, pos to
 }
 
 fn stripped_name(name string) string {
-	idx := name.index_last('.') or { -1 }
+	idx := name.last_index('.') or { -1 }
 	return name[(idx + 1)..]
 }