diff --git a/browser/components/preferences/in-content/privacy.js b/browser/components/preferences/in-content/privacy.js
index e3415182196e..e10871e8c104 100644
--- a/browser/components/preferences/in-content/privacy.js
+++ b/browser/components/preferences/in-content/privacy.js
@@ -1997,32 +1997,24 @@ var gPrivacyPane = {
       safeBrowsingMalwarePref.value = enableSafeBrowsing.checked;
 
       if (enableSafeBrowsing.checked) {
-        if (blockDownloads) {
-          blockDownloads.removeAttribute("disabled");
-          if (blockDownloads.checked) {
-            blockUncommonUnwanted.removeAttribute("disabled");
-          }
-        } else {
+        blockDownloads.removeAttribute("disabled");
+        if (blockDownloads.checked) {
           blockUncommonUnwanted.removeAttribute("disabled");
         }
       } else {
-        if (blockDownloads) {
-          blockDownloads.setAttribute("disabled", "true");
-        }
+        blockDownloads.setAttribute("disabled", "true");
         blockUncommonUnwanted.setAttribute("disabled", "true");
       }
     });
 
-    if (blockDownloads) {
-      blockDownloads.addEventListener("command", function() {
-        blockDownloadsPref.value = blockDownloads.checked;
-        if (blockDownloads.checked) {
-          blockUncommonUnwanted.removeAttribute("disabled");
-        } else {
-          blockUncommonUnwanted.setAttribute("disabled", "true");
-        }
-      });
-    }
+    blockDownloads.addEventListener("command", function() {
+      blockDownloadsPref.value = blockDownloads.checked;
+      if (blockDownloads.checked) {
+        blockUncommonUnwanted.removeAttribute("disabled");
+      } else {
+        blockUncommonUnwanted.setAttribute("disabled", "true");
+      }
+    });
 
     blockUncommonUnwanted.addEventListener("command", function() {
       blockUnwantedPref.value = blockUncommonUnwanted.checked;
@@ -2061,20 +2053,14 @@ var gPrivacyPane = {
     enableSafeBrowsing.checked =
       safeBrowsingPhishingPref.value && safeBrowsingMalwarePref.value;
     if (!enableSafeBrowsing.checked) {
-      if (blockDownloads) {
-        blockDownloads.setAttribute("disabled", "true");
-      }
-
+      blockDownloads.setAttribute("disabled", "true");
       blockUncommonUnwanted.setAttribute("disabled", "true");
     }
 
-    if (blockDownloads) {
-      blockDownloads.checked = blockDownloadsPref.value;
-      if (!blockDownloadsPref.value) {
-        blockUncommonUnwanted.setAttribute("disabled", "true");
-      }
+    blockDownloads.checked = blockDownloadsPref.value;
+    if (!blockDownloadsPref.value) {
+      blockUncommonUnwanted.setAttribute("disabled", "true");
     }
-
     blockUncommonUnwanted.checked =
       blockUnwantedPref.value && blockUncommonPref.value;
   },