diff --git a/third_party/ijar/mapped_file.h b/third_party/ijar/mapped_file.h
index d58fc18..7653638 100644
--- a/third_party/ijar/mapped_file.h
+++ b/third_party/ijar/mapped_file.h
@@ -76,7 +76,7 @@
 
   // The mapped contents of the file.
   u1* Buffer() const { return buffer_; }
-  int Close(u8 size);
+  int Close(int size);
 };
 
 }  // namespace devtools_ijar
diff --git a/third_party/ijar/mapped_file_unix.cc b/third_party/ijar/mapped_file_unix.cc
index 5271f00..ccb8787 100644
--- a/third_party/ijar/mapped_file_unix.cc
+++ b/third_party/ijar/mapped_file_unix.cc
@@ -131,9 +131,9 @@
   delete impl_;
 }
 
-int MappedOutputFile::Close(u8 size) {
+int MappedOutputFile::Close(int size) {
   if (size > estimated_size_) {
-    snprintf(errmsg, MAX_ERROR, "size %lld > estimated size %lld", size,
+    snprintf(errmsg, MAX_ERROR, "size %d > estimated size %lld", size,
              estimated_size_);
     errmsg_ = errmsg;
     return -1;