diff --git a/docshell/base/SerializedLoadContext.h b/docshell/base/SerializedLoadContext.h
index 2c60ed9700a..0d6426c3144 100644
--- a/docshell/base/SerializedLoadContext.h
+++ b/docshell/base/SerializedLoadContext.h
@@ -28,6 +28,11 @@ class SerializedLoadContext
 {
 public:
   SerializedLoadContext()
+    : mIsNotNull(false)
+    , mIsPrivateBitValid(false)
+    , mIsContent(false)
+    , mUsePrivateBrowsing(false)
+    , mUseRemoteTabs(false)
   {
     Init(nullptr);
   }
diff --git a/docshell/shistory/nsSHistory.cpp b/docshell/shistory/nsSHistory.cpp
index d83a767f6cc..6400fe64dbd 100644
--- a/docshell/shistory/nsSHistory.cpp
+++ b/docshell/shistory/nsSHistory.cpp
@@ -233,6 +233,7 @@ nsSHistory::nsSHistory()
   : mIndex(-1)
   , mLength(0)
   , mRequestedIndex(-1)
+  , mRootDocShell(nullptr)
 {
   // Add this new SHistory object to the list
   PR_APPEND_LINK(this, &gSHistoryList);
@@ -1004,6 +1005,7 @@ class TransactionAndDistance
 public:
   TransactionAndDistance(nsISHTransaction* aTrans, uint32_t aDist)
     : mTransaction(aTrans)
+    , mLastTouched(0)
     , mDistance(aDist)
   {
     mViewer = GetContentViewerForTransaction(aTrans);
@@ -1017,7 +1019,6 @@ public:
       shentryInternal->GetLastTouched(&mLastTouched);
     } else {
       NS_WARNING("Can't cast to nsISHEntryInternal?");
-      mLastTouched = 0;
     }
   }