diff --git a/runtime/java_vm_ext.cc b/runtime/java_vm_ext.cc
index caf705a..f80c43d 100644
--- a/runtime/java_vm_ext.cc
+++ b/runtime/java_vm_ext.cc
@@ -18,6 +18,8 @@
 
 #include <dlfcn.h>
 
+#include "android-base/stringprintf.h"
+
 #include "art_method.h"
 #include "base/dumpable.h"
 #include "base/mutex.h"
@@ -42,6 +44,9 @@
 
 namespace art {
 
+using android::base::StringAppendF;
+using android::base::StringAppendV;
+
 static constexpr size_t kGlobalsMax = 51200;  // Arbitrary sanity check. (Must fit in 16 bits.)
 
 static constexpr size_t kWeakGlobalsMax = 51200;  // Arbitrary sanity check. (Must fit in 16 bits.)