diff --git a/include/binder/Parcel.h b/include/binder/Parcel.h
index bd2213d..b0d53ef 100644
--- a/include/binder/Parcel.h
+++ b/include/binder/Parcel.h
@@ -681,13 +681,13 @@
         return UNEXPECTED_NULL;
     }
 
-    if (val->max_size() < size) {
+    if (val->max_size() < static_cast<size_t>(size)) {
         return NO_MEMORY;
     }
 
     val->resize(static_cast<size_t>(size));
 
-    if (val->size() < size) {
+    if (val->size() < static_cast<size_t>(size)) {
         return NO_MEMORY;
     }