diff --git a/include/shell/shell_history.h b/include/shell/shell_history.h
index ff9c2a46a6b..67337d50117 100644
--- a/include/shell/shell_history.h
+++ b/include/shell/shell_history.h
@@ -31,7 +31,7 @@ struct shell_history {
  * @param _size Memory dedicated for shell history.
  */
 #define SHELL_HISTORY_DEFINE(_name, _size) \
-	static u8_t __noinit __aligned(sizeof(u32_t)) \
+	static u8_t __noinit __aligned(sizeof(void *)) \
 			_name##_ring_buf_data[_size]; \
 	static struct ring_buf _name##_ring_buf = \
 		{ \