diff --git a/compiler/test/runner.re b/compiler/test/runner.re
index 9d4e6be73..c52fbc9a5 100644
--- a/compiler/test/runner.re
+++ b/compiler/test/runner.re
@@ -22,8 +22,6 @@ let stdlibfile = name =>
   Filepath.to_string(Fp.At.(test_stdlib_dir / (name ++ ".gr")));
 let runtimefile = name =>
   Filepath.to_string(Fp.At.(test_runtime_dir / (name ++ ".gr")));
-let watfile = name =>
-  Filepath.to_string(Fp.At.(test_output_dir / (name ++ ".wat")));
 let wasmfile = name =>
   Filepath.to_string(Fp.At.(test_output_dir / (name ++ ".wasm")));
 let mashfile = name =>
@@ -220,27 +218,18 @@ let lsp = stdin_input => {
 let module_header = "module Test; ";
 
 let makeSnapshotRunner =
-    (
-      ~config_fn=?,
-      ~wasm=false,
-      test,
-      ~module_header=module_header,
-      name,
-      prog,
-    ) => {
-  let hook = if (wasm) {stop_after_assembled} else {stop_after_object_emitted};
-  let out_name =
-    if (wasm) {
-      watfile(name);
-    } else {
-      mashfile(name);
-    };
+    (~config_fn=?, test, ~module_header=module_header, name, prog) => {
   test(name, ({expect}) => {
     Config.preserve_all_configs(() => {
       Config.sexp_locs_enabled := false;
-      Config.wat := wasm;
-      ignore @@ compile(~hook, ~config_fn?, name, module_header ++ prog);
-      expect.file(out_name).toMatchSnapshot();
+      ignore @@
+      compile(
+        ~hook=stop_after_object_emitted,
+        ~config_fn?,
+        name,
+        module_header ++ prog,
+      );
+      expect.file(mashfile(name)).toMatchSnapshot();
     })
   });
 };
diff --git a/compiler/test/suites/includes.re b/compiler/test/suites/includes.re
index 613532e3f..6285a876b 100644
--- a/compiler/test/suites/includes.re
+++ b/compiler/test/suites/includes.re
@@ -6,7 +6,6 @@ describe("includes", ({test, testSkip}) => {
     Sys.backend_type == Other("js_of_ocaml") ? testSkip : test;
 
   let assertSnapshot = makeSnapshotRunner(test);
-  let assertWasmSnapshot = makeSnapshotRunner(test, ~wasm=true);
   let assertCompileError = makeCompileErrorRunner(test);
   let assertRun = makeRunner(test_or_skip);
   let assertFileRun = makeFileRunner(test_or_skip);
@@ -209,7 +208,37 @@ describe("includes", ({test, testSkip}) => {
     "{\n  x: 1\n}\n",
   );
   /* Duplicate imports */
-  assertWasmSnapshot("duplicate_imports", {|
-    print("test")
-  |});
+  test("dedupe_includes", ({expect}) => {
+    let name = "dedupe_includes";
+    let outfile = wasmfile(name);
+    ignore @@
+    compile(
+      ~hook=Grain.Compile.stop_after_assembled,
+      name,
+      {|
+      module DeDupeIncludes
+      // Ensures fd_write is only included once
+      print("test")
+      |},
+    );
+    let ic = open_in_bin(outfile);
+    let sections = Grain_utils.Wasm_utils.get_wasm_sections(ic);
+    close_in(ic);
+    let import_section =
+      List.find_map(
+        (sec: Grain_utils.Wasm_utils.wasm_bin_section) =>
+          switch (sec) {
+          | {sec_type: Import(imports)} => Some(imports)
+          | _ => None
+          },
+        sections,
+      );
+    expect.option(import_section).toBeSome();
+    expect.int(List.length(Option.get(import_section))).toBe(1);
+    expect.list(Option.get(import_section)).toContainEqual((
+      WasmFunction,
+      "wasi_snapshot_preview1",
+      "fd_write",
+    ));
+  });
 });