diff --git a/compiler/test/runner.re b/compiler/test/runner.re
index 0b6958196..2bf93a05c 100644
--- a/compiler/test/runner.re
+++ b/compiler/test/runner.re
@@ -219,6 +219,7 @@ let makeSnapshotRunner =
     (~config_fn=?, test, ~module_header=module_header, name, prog) => {
   test(name, ({expect}) => {
     Config.preserve_all_configs(() => {
+      Config.sexp_locs_enabled := false;
       ignore @@
       compile(
         ~hook=stop_after_object_emitted,
@@ -247,6 +248,7 @@ let makeFilesizeRunner =
 let makeSnapshotFileRunner = (test, ~config_fn=?, name, filename) => {
   test(name, ({expect}) => {
     Config.preserve_all_configs(() => {
+      Config.sexp_locs_enabled := false;
       let infile = grainfile(filename);
       let outfile = wasmfile(name);
       ignore @@