diff --git a/src/common/buffer.h b/src/common/buffer.h
index e9e374e55..a6a8f51db 100644
--- a/src/common/buffer.h
+++ b/src/common/buffer.h
@@ -23,7 +23,7 @@
 #include <stdint.h>
 #include <vector>
 
-//#define BUFFER_HEURISTICS 1
+#define BUFFER_HEURISTICS 1
 #define BUFFER_USE_INLINE 1