diff --git a/.eslintrc.js b/.eslintrc.js
index d775aa9de4..594cbc46e5 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -49,7 +49,6 @@ module.exports = {
       },
       ignoreEOLComments: true,
     }],
-    "prettier/prettier": "off",
     "semi-spacing": ["error", {"before": false, "after": true}],
     "space-in-parens": ["error", "never"],
 
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000000..2debd16fa3
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,21 @@
+# This list automatically picks up exclusions from .eslintignore
+
+# These files are disabled due to parsing errors when using Prettier.
+# Bug 1560186
+*.html
+*.xhtml
+*.xul
+*.xml
+
+# Ignore .eslintrc.js for now.
+.eslintrc.js
+
+# Ignore all top-level directories that contain JS files (for now).
+calendar/**
+chat/**
+common/**
+editor/**
+ldap/**
+mail/**
+mailnews/**
+suite/**