diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 8751ecb..ed6c834 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -541,7 +541,7 @@
     return err == NO_ERROR;
 }
 
-uid_t Parcel::readCallingWorkSourceUid()
+uid_t Parcel::readCallingWorkSourceUid() const
 {
     if (!mRequestHeaderPresent) {
         return IPCThreadState::kUnsetWorkSource;
diff --git a/libs/binder/include/binder/Parcel.h b/libs/binder/include/binder/Parcel.h
index 50ca983..f5aafc7 100644
--- a/libs/binder/include/binder/Parcel.h
+++ b/libs/binder/include/binder/Parcel.h
@@ -381,7 +381,7 @@
     bool                replaceCallingWorkSourceUid(uid_t uid);
     // Returns the work source provided by the caller. This can only be trusted for trusted calling
     // uid.
-    uid_t               readCallingWorkSourceUid();
+    uid_t               readCallingWorkSourceUid() const;
     void                readRequestHeaders() const;
 
 private: