diff --git a/st.c b/st.c
index c59d15c..a8fe7cb 100644
--- a/st.c
+++ b/st.c
@@ -41,11 +41,11 @@
 #define STR_ARG_SIZ   ESC_ARG_SIZ
 
 /* macros */
-#define IS_SET(flag)		((term.mode & (flag)) != 0)
-#define ISCONTROLC0(c)		(BETWEEN(c, 0, 0x1f) || (c) == 0x7f)
-#define ISCONTROLC1(c)		(BETWEEN(c, 0x80, 0x9f))
-#define ISCONTROL(c)		(ISCONTROLC0(c) || ISCONTROLC1(c))
-#define ISDELIM(u)		((u) && wcschr(worddelimiters, u))
+#define IS_SET(flag)    ((term.mode & (flag)) != 0)
+#define ISCONTROLC0(c)  (BETWEEN(c, 0, 0x1f) || (c) == 0x7f)
+#define ISCONTROLC1(c)  (BETWEEN(c, 0x80, 0x9f))
+#define ISCONTROL(c)    (ISCONTROLC0(c) || ISCONTROLC1(c))
+#define ISDELIM(u)      ((u) && wcschr(worddelimiters, u))
 
 enum term_mode {
 	MODE_WRAP        = 1 << 0,
diff --git a/x.c b/x.c
index 89a01a9..d5ee3d4 100644
--- a/x.c
+++ b/x.c
@@ -66,10 +66,10 @@ static void ttysend(const Arg *);
 #define XEMBED_FOCUS_OUT 5
 
 /* macros */
-#define IS_SET(flag)		((win.mode & (flag)) != 0)
-#define TRUERED(x)		(((x) & 0xff0000) >> 8)
-#define TRUEGREEN(x)		(((x) & 0xff00))
-#define TRUEBLUE(x)		(((x) & 0xff) << 8)
+#define IS_SET(flag)    ((win.mode & (flag)) != 0)
+#define TRUERED(x)      (((x) & 0xff0000) >> 8)
+#define TRUEGREEN(x)    (((x) & 0xff00))
+#define TRUEBLUE(x)     (((x) & 0xff) << 8)
 
 typedef XftDraw *Draw;
 typedef XftColor Color;