diff --git a/Include/structmember.h b/Include/structmember.h
index 40c04e9..948f690 100644
--- a/Include/structmember.h
+++ b/Include/structmember.h
@@ -16,42 +16,41 @@
    pointer is NULL. */
 
 typedef struct PyMemberDef {
-	/* Current version, use this */
-	char *name;
-	int type;
-	Py_ssize_t offset;
-	int flags;
-	char *doc;
+    char *name;
+    int type;
+    Py_ssize_t offset;
+    int flags;
+    char *doc;
 } PyMemberDef;
 
 /* Types */
-#define T_SHORT		0
-#define T_INT		1
-#define T_LONG		2
-#define T_FLOAT		3
-#define T_DOUBLE	4
-#define T_STRING	5
-#define T_OBJECT	6
+#define T_SHORT     0
+#define T_INT       1
+#define T_LONG      2
+#define T_FLOAT     3
+#define T_DOUBLE    4
+#define T_STRING    5
+#define T_OBJECT    6
 /* XXX the ordering here is weird for binary compatibility */
-#define T_CHAR		7	/* 1-character string */
-#define T_BYTE		8	/* 8-bit signed int */
+#define T_CHAR      7   /* 1-character string */
+#define T_BYTE      8   /* 8-bit signed int */
 /* unsigned variants: */
-#define T_UBYTE		9
-#define T_USHORT	10
-#define T_UINT		11
-#define T_ULONG		12
+#define T_UBYTE     9
+#define T_USHORT    10
+#define T_UINT      11
+#define T_ULONG     12
 
 /* Added by Jack: strings contained in the structure */
-#define T_STRING_INPLACE	13
+#define T_STRING_INPLACE    13
 
 /* Added by Lillo: bools contained in the structure (assumed char) */
-#define T_BOOL		14
+#define T_BOOL      14
 
-#define T_OBJECT_EX	16	/* Like T_OBJECT, but raises AttributeError
-				   when the value is NULL, instead of
-				   converting to None. */
+#define T_OBJECT_EX 16  /* Like T_OBJECT, but raises AttributeError
+                           when the value is NULL, instead of
+                           converting to None. */
 #ifdef HAVE_LONG_LONG
-#define T_LONGLONG      17  
+#define T_LONGLONG      17
 #define T_ULONGLONG     18
 #endif /* HAVE_LONG_LONG */
 
@@ -60,10 +59,10 @@
 
 
 /* Flags */
-#define READONLY	1
-#define READ_RESTRICTED	2
+#define READONLY            1
+#define READ_RESTRICTED     2
 #define PY_WRITE_RESTRICTED 4
-#define RESTRICTED	(READ_RESTRICTED | PY_WRITE_RESTRICTED)
+#define RESTRICTED          (READ_RESTRICTED | PY_WRITE_RESTRICTED)
 
 
 /* Current API, use this */