diff --git a/runtime/method_reference.h b/runtime/method_reference.h
index 1ff4ea0..8e46d7e 100644
--- a/runtime/method_reference.h
+++ b/runtime/method_reference.h
@@ -17,6 +17,8 @@
 #ifndef ART_RUNTIME_METHOD_REFERENCE_H_
 #define ART_RUNTIME_METHOD_REFERENCE_H_
 
+#include <stdint.h>
+
 namespace art {
 
 class DexFile;