diff --git a/include/hardware/hardware.h b/include/hardware/hardware.h
index 416ae39..74f57aa 100644
--- a/include/hardware/hardware.h
+++ b/include/hardware/hardware.h
@@ -144,8 +144,12 @@
     /** module's dso */
     void* dso;
 
+#ifdef __LP64__
+    uint64_t reserved[32-7];
+#else
     /** padding to 128 bytes, reserved for future use */
     uint32_t reserved[32-7];
+#endif
 
 } hw_module_t;
 
@@ -186,7 +190,11 @@
     struct hw_module_t* module;
 
     /** padding reserved for future use */
+#ifdef __LP64__
+    uint64_t reserved[12];
+#else
     uint32_t reserved[12];
+#endif
 
     /** Close this device */
     int (*close)(struct hw_device_t* device);
diff --git a/include/hardware/hwcomposer.h b/include/hardware/hwcomposer.h
index 86479d3..82e7671 100644
--- a/include/hardware/hwcomposer.h
+++ b/include/hardware/hwcomposer.h
@@ -262,7 +262,7 @@
     };
 
     /* Allow for expansion w/o breaking binary compatibility.
-     * Pad layer to 96 bytes, assuming 32-bit pointers.
+     * Pad layer to 96 bytes.
      */
     int32_t reserved[24 - 19];