diff --git a/src/ipc.c b/src/ipc.c
index 48008d96fc..d22cca937f 100644
--- a/src/ipc.c
+++ b/src/ipc.c
@@ -49,10 +49,10 @@ static int semaphore_set = -1;
  * @brief Union type for values of semctl actions
  */
 union semun {
-    int              val;    ///< Value for SETVAL
-    struct semid_ds *buf;    ///< Buffer for IPC_STAT, IPC_SET
-    unsigned short  *array;  ///< Array for GETALL, SETALL
-    struct seminfo  *__buf;  ///< Buffer for IPC_INFO (Linux-specific)
+  int val;                ///< Value for SETVAL
+  struct semid_ds *buf;   ///< Buffer for IPC_STAT, IPC_SET
+  unsigned short *array;  ///< Array for GETALL, SETALL
+  struct seminfo *__buf;  ///< Buffer for IPC_INFO (Linux-specific)
 };
 
 /**