diff --git a/astlpc.c b/astlpc.c
index d1cf509..fdabde1 100644
--- a/astlpc.c
+++ b/astlpc.c
@@ -53,7 +53,7 @@
 
 #ifndef container_of
 #define container_of(ptr, type, member) \
-    (type *)((char *)(ptr) - (char *)&((type *)0)->member)
+	(type *)((char *)(ptr) - (char *)&((type *)0)->member)
 #endif
 
 #define binding_to_astlpc(b) \
diff --git a/serial.c b/serial.c
index 3186a2d..ce4ea91 100644
--- a/serial.c
+++ b/serial.c
@@ -56,7 +56,7 @@
 
 #ifndef container_of
 #define container_of(ptr, type, member) \
-    (type *)((char *)(ptr) - (char *)&((type *)0)->member)
+	(type *)((char *)(ptr) - (char *)&((type *)0)->member)
 #endif
 
 #define binding_to_serial(b) \