--- a/toolkit/components/passwordmgr/test/prompt_common.js
+++ b/toolkit/components/passwordmgr/test/prompt_common.js
@@ -1,8 +1,15 @@
+/**
+ * NOTE:
+ * This file is currently only being used for tests which haven't been
+ * fixed to work with e10s. Favor using the `prompt_common.js` file that
+ * is in `toolkit/components/prompts/test/` instead.
+ */
+
 var Ci = SpecialPowers.Ci;
 ok(Ci != null, "Access Ci");
 var Cc = SpecialPowers.Cc;
 ok(Cc != null, "Access Cc");
 
 var didDialog;
 
 var timer; // keep in outer scope so it's not GC'd before firing

--- a/toolkit/components/prompts/test/test_subresources_prompts.html
+++ b/toolkit/components/prompts/test/test_subresources_prompts.html
@@ -129,21 +129,16 @@ add_task(function* runTestAuth()
     passHidden  : false,
     checkHidden : true,
     checkMsg    : "",
     checked     : false,
     focused     : "textField",
     defButton   : "button0",
   };
 
-  if (isE10S) {
-    state.checkHidden = false;
-    state.checkMsg = "Use Password Manager to remember this password."
-  }
-
   action = {
     buttonClick : "ok",
     setCheckbox : false,
     textField   : "mochiuser1",
     passField   : "mochipass1",
   };
 
   promptDone = handlePrompt(state, action);
@@ -171,21 +166,16 @@ add_task(function* runTestAuth()
     passHidden  : false,
     checkHidden : true,
     checkMsg    : "",
     checked     : false,
     focused     : "textField",
     defButton   : "button0",
   };
 
-  if (isE10S) {
-    state.checkHidden = false;
-    state.checkMsg = "Use Password Manager to remember this password."
-  }
-
   action = {
     buttonClick : "ok",
     setCheckbox : false,
     textField   : "mochiuser2",
     passField   : "mochipass2",
   };
 
   promptDone = handlePrompt(state, action);