diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 2e98eec3c..729cf2168 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -1036,6 +1036,7 @@ status_t Parcel::readDouble(double *pArg) const
       double d;
       unsigned long long ll;
     } u;
+    u.d = 0;
     status_t status;
     status = readAligned(&u.ll);
     *pArg = u.d;