diff --git a/util/arena.cc b/util/arena.cc
index 51b56da7dc6a2ceff27ad9076ecb3907985944b1..601230a0e0192d68fc2649d026948b36e79ac861 100644
--- a/util/arena.cc
+++ b/util/arena.cc
@@ -14,6 +14,7 @@
 
 namespace rocksdb {
 
+const size_t Arena::kInlineSize = 2048;
 const size_t Arena::kMinBlockSize = 4096;
 const size_t Arena::kMaxBlockSize = 2 << 30;
 static const int kAlignUnit = sizeof(void*);
diff --git a/util/arena.h b/util/arena.h
index 0c9aa9738c26c931f7874c52f340b9f9bec06726..bb45ea5afb555151a8e6aae6b27d3ee0de910e1b 100644
--- a/util/arena.h
+++ b/util/arena.h
@@ -28,7 +28,7 @@ class Arena {
   Arena(const Arena&) = delete;
   void operator=(const Arena&) = delete;
 
-  static const size_t kInlineSize = 2048;
+  static const size_t kInlineSize;
   static const size_t kMinBlockSize;
   static const size_t kMaxBlockSize;