diff --git a/include/gui/BufferItem.h b/include/gui/BufferItem.h
index 3ab63d0..5232d0f 100644
--- a/include/gui/BufferItem.h
+++ b/include/gui/BufferItem.h
@@ -74,13 +74,7 @@
     // to set by queueBuffer each time this slot is queued. This value
     // is guaranteed to be monotonically increasing for each newly
     // acquired buffer.
-    union {
-        int64_t mTimestamp;
-        struct {
-            uint32_t mTimestampLo;
-            uint32_t mTimestampHi;
-        };
-    };
+    int64_t mTimestamp;
 
     // mIsAutoTimestamp indicates whether mTimestamp was generated
     // automatically when the buffer was queued.
@@ -92,13 +86,7 @@
     android_dataspace mDataSpace;
 
     // mFrameNumber is the number of the queued frame for this slot.
-    union {
-        uint64_t mFrameNumber;
-        struct {
-            uint32_t mFrameNumberLo;
-            uint32_t mFrameNumberHi;
-        };
-    };
+    uint64_t mFrameNumber;
 
     // mSlot is the slot index of this buffer (default INVALID_BUFFER_SLOT).
     int mSlot;