diff --git a/include/c11log/details/stack_buf.h b/include/c11log/details/stack_buf.h
index b9fde3b7..bc743349 100644
--- a/include/c11log/details/stack_buf.h
+++ b/include/c11log/details/stack_buf.h
@@ -10,9 +10,7 @@ namespace c11log
 namespace details
 {
 
-
-
-template<unsigned short STACK_SIZE = 128>
+template<unsigned short STACK_SIZE>
 class stack_buf
 {
 public: