diff --git a/lib/normalize.js b/lib/normalize.js
index e806f11..32ed0a9 100644
--- a/lib/normalize.js
+++ b/lib/normalize.js
@@ -30,8 +30,7 @@ function normalize (data, warn, strict) {
   }
 
   if (data.scripts &&
-      data.scripts.install === 'node-gyp rebuild' &&
-      !data.scripts.preinstall) {
+      data.scripts.install === 'node-gyp rebuild') {
     data.gypfile = true
   }
   fixer.warn = function () {
diff --git a/test/scripts.js b/test/scripts.js
index d2a00e0..c0c2ed4 100644
--- a/test/scripts.js
+++ b/test/scripts.js
@@ -50,7 +50,7 @@ test('does not set gypfile when install script is different', function () {
   assert.strictEqual(data.gypfile, undefined, 'gypfile should not be set')
 })
 
-test('does not set gypfile when preinstall script exists', function () {
+test('sets gypfile when preinstall script exists', function () {
   var data = {
     name: 'test-package',
     version: '1.0.0',
@@ -60,7 +60,7 @@ test('does not set gypfile when preinstall script exists', function () {
     },
   }
   normalize(data)
-  assert.strictEqual(data.gypfile, undefined, 'gypfile should not be set when preinstall exists')
+  assert.strictEqual(data.gypfile, true, 'gypfile should be set when preinstall exists')
 })
 
 test('removes non-string script values', function () {