diff --git a/browser/base/content/test/performance/browser_startup_mainthreadio.js b/browser/base/content/test/performance/browser_startup_mainthreadio.js
index 4d0a425ed97e..f2da13bdcc6b 100644
--- a/browser/base/content/test/performance/browser_startup_mainthreadio.js
+++ b/browser/base/content/test/performance/browser_startup_mainthreadio.js
@@ -81,7 +81,6 @@ const startupPhases = {
     },
     { // bug 1541200
       path: "UAppData:Crash Reports/InstallTime20*",
-      condition: AppConstants.MOZ_CRASHREPORTER,
       stat: 1, // only caught on Windows.
       read: 1,
       write: 2,
@@ -89,13 +88,13 @@ const startupPhases = {
     },
     { // bug 1541200
       path: "UAppData:Crash Reports/LastCrash",
-      condition: WIN && AppConstants.MOZ_CRASHREPORTER,
+      condition: WIN,
       stat: 1, // only caught on Windows.
       read: 1,
     },
     { // bug 1541200
       path: "UAppData:Crash Reports/LastCrash",
-      condition: !WIN && AppConstants.MOZ_CRASHREPORTER,
+      condition: !WIN,
       ignoreIfUnused: true, // only if we ever crashed on this machine
       read: 1,
       close: 1,
@@ -227,7 +226,6 @@ const startupPhases = {
     {
       path: "*ld.so.conf*",
       condition: LINUX,
-      ignoreIfUnused: true,
       read: 22,
       close: 11,
     },
@@ -297,7 +295,6 @@ const startupPhases = {
     {
       path: "*ld.so.conf*",
       condition: LINUX,
-      ignoreIfUnused: true,
       read: 22,
       close: 11,
     },