diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 0b9849a..ba44c66 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -77,6 +77,9 @@
 
 namespace android {
 
+// many things compile this into prebuilts on the stack
+static_assert(sizeof(Parcel) == 60 || sizeof(Parcel) == 120);
+
 static pthread_mutex_t gParcelGlobalAllocSizeLock = PTHREAD_MUTEX_INITIALIZER;
 static size_t gParcelGlobalAllocSize = 0;
 static size_t gParcelGlobalAllocCount = 0;
diff --git a/libs/binder/include/binder/Stability.h b/libs/binder/include/binder/Stability.h
index 77f0667..487f480 100644
--- a/libs/binder/include/binder/Stability.h
+++ b/libs/binder/include/binder/Stability.h
@@ -45,7 +45,7 @@
     // up the efficiency level of a binder object. So, we expose the underlying type.
     friend ::android::Parcel;
 
-    enum Level : int32_t {
+    enum Level : int16_t {
         UNDECLARED = 0,
 
         VENDOR = 0b000011,