diff --git a/m-buffer.h b/m-buffer.h
index 492ad4bc..2fb2a99d 100644
--- a/m-buffer.h
+++ b/m-buffer.h
@@ -608,13 +608,13 @@ M_C(name, _init)(buffer_t v, size_t size)                               \
     return iP-iC;							\
   }									\
                                                                         \
- static inline size_t                                                   \
- M_C(name, _capacity)(buffer_t v)					\
- {                                                                      \
-   QUEUEI_MPMC_CONTRACT(v);                                             \
-   return v->size;                                                      \
- }                                                                      \
-									\
+  static inline size_t                                                  \
+  M_C(name, _capacity)(buffer_t v)					\
+  {                                                                     \
+    QUEUEI_MPMC_CONTRACT(v);                                            \
+    return v->size;                                                     \
+  }                                                                     \
+                                                                        \
   static inline bool							\
   M_C(name, _empty_p)(buffer_t v)					\
   {									\