diff --git a/inc/pbuf.h b/inc/pbuf.h
index b6dfd5e..8974457 100644
--- a/inc/pbuf.h
+++ b/inc/pbuf.h
@@ -8,9 +8,6 @@
 #include <assert.h>
 
 
-#define __align4	__attribute__((aligned(4)))
-
-
 typedef void (*pbuf_callback_t)(void);		//function pointer that will be called when a pbuf is freed in this pool
 
 struct pbuf_pool_s;
@@ -48,13 +45,13 @@
 
 
 #define PBUF_DECLARE_POOL(pool_name, pbuf_count, pbuf_size) \
-static uint8_t pool_name##_payload_memory[(pbuf_count) * (pbuf_size)] __align4; \
+static uint8_t pool_name##_payload_memory[(pbuf_count) * (pbuf_size)] __attribute__((aligned(4))); \
 static pbuf_t pool_name##_memory[pbuf_count]; \
 pbuf_pool_t pool_name
 
 
 #define STATIC_PBUF_DECLARE_POOL(pool_name, pbuf_count, pbuf_size) \
-static uint8_t pool_name##_payload_memory[(pbuf_count) * (pbuf_size)] __align4; \
+static uint8_t pool_name##_payload_memory[(pbuf_count) * (pbuf_size)] __attribute__((aligned(4))); \
 static pbuf_t pool_name##_memory[pbuf_count]; \
 static pbuf_pool_t pool_name