diff --git a/java/CMakeLists.txt b/java/CMakeLists.txt
index d4a707b3c..70e3aaeeb 100644
--- a/java/CMakeLists.txt
+++ b/java/CMakeLists.txt
@@ -1,3 +1,5 @@
+cmake_minimum_required(VERSION 2.6)
+
 set(JNI_NATIVE_SOURCES
         rocksjni/backupenginejni.cc
         rocksjni/backupablejni.cc