diff --git a/src/ExifTool.spec.ts b/src/ExifTool.spec.ts
index 9da80262..d8a3ceb6 100644
--- a/src/ExifTool.spec.ts
+++ b/src/ExifTool.spec.ts
@@ -1,14 +1,12 @@
 import { BatchCluster } from "batch-cluster"
 import * as _path from "path"
-import { platform } from "process"
-
-import { expect, testImg } from "./_chai.spec"
 import { times } from "./Array"
 import { ExifDateTime } from "./ExifDateTime"
 import { DefaultMaxProcs, ExifTool, exiftool } from "./ExifTool"
 import { keys } from "./Object"
-import { Tags } from "./Tags"
 import { leftPad } from "./String"
+import { Tags } from "./Tags"
+import { expect, isWin32, testImg } from "./_chai.spec"
 
 function normalize(tagNames: string[]): string[] {
   return tagNames
@@ -68,7 +66,7 @@ describe("ExifTool", function () {
     ignoreShebangs.push(true)
   } else {
     ignoreShebangs.push(false)
-    if (platform !== "win32") ignoreShebangs.push(true)
+    if (!isWin32()) ignoreShebangs.push(true)
   }
 
   for (const ignoreShebang of ignoreShebangs) {
diff --git a/src/ReadTask.spec.ts b/src/ReadTask.spec.ts
index 5bf77989..1f4fa2b0 100644
--- a/src/ReadTask.spec.ts
+++ b/src/ReadTask.spec.ts
@@ -5,7 +5,7 @@ import { ExifDateTime } from "./ExifDateTime"
 import { exiftool, ExifTool } from "./ExifTool"
 import { ReadTask } from "./ReadTask"
 import { Tags } from "./Tags"
-import { expect } from "./_chai.spec"
+import { expect, isWin32 } from "./_chai.spec"
 
 function parse(tags: any, err?: Error): Tags {
   const tt = ReadTask.for("/tmp/example.jpg", [])
@@ -262,7 +262,7 @@ describe("ReadTask", () => {
 
   describe("quotes in filenames", () => {
     after(() => exiftool.end())
-    const base = `it's a "file".jpg`
+    const base = isWin32() ? `it's a file.jpg` : `it's a "file".jpg`
     it("reads from " + base, async () => {
       const tmp = join(tmpdir(), base)
       await fse.mkdirp(tmpdir())
diff --git a/src/_chai.spec.ts b/src/_chai.spec.ts
index 2730fbc2..eef94fbd 100644
--- a/src/_chai.spec.ts
+++ b/src/_chai.spec.ts
@@ -1,7 +1,7 @@
 import { Deferred, Logger, setLogger } from "batch-cluster"
 import { createHash } from "crypto"
 import * as fse from "fs-extra"
-import { tmpdir } from "os"
+import { platform, tmpdir } from "os"
 import { join } from "path"
 import { env } from "process"
 import { orElse } from "./Maybe"
@@ -64,3 +64,7 @@ export function sha1(path: string): Promise<string> {
   readStream.on("end", () => d.resolve(sha.digest().toString("hex")))
   return d.promise
 }
+
+export function isWin32() {
+  return platform() === "win32"
+}