diff --git a/include/boost/python/detail/python22_fixed.h b/include/boost/python/detail/python22_fixed.h
index 74ba44e4..e236c2b0 100644
--- a/include/boost/python/detail/python22_fixed.h
+++ b/include/boost/python/detail/python22_fixed.h
@@ -18,7 +18,7 @@
 /* Enable compiler features; switching on C lib defines doesn't work
    here, because the symbols haven't necessarily been defined yet. */
 #ifndef _GNU_SOURCE
-# define _GNU_SOURCE	1
+# define _GNU_SOURCE    1
 #endif
 
 /* Forcing SUSv2 compatibility still produces problems on some
@@ -26,7 +26,7 @@
    define is switched off. */
 #if 0
 #ifndef _XOPEN_SOURCE
-# define _XOPEN_SOURCE	500
+# define _XOPEN_SOURCE  500
 #endif
 #endif
 
@@ -40,10 +40,10 @@
 #endif
 
 /* pyconfig.h may or may not define DL_IMPORT */
-#ifndef DL_IMPORT	/* declarations for DLL import/export */
+#ifndef DL_IMPORT       /* declarations for DLL import/export */
 #define DL_IMPORT(RTYPE) RTYPE
 #endif
-#ifndef DL_EXPORT	/* declarations for DLL import/export */
+#ifndef DL_EXPORT       /* declarations for DLL import/export */
 #define DL_EXPORT(RTYPE) RTYPE
 #endif
 
@@ -124,15 +124,15 @@ extern "C" { // Boost.Python modification: provide missing extern "C"
 
 #include "abstract.h"
 
-#define PyArg_GetInt(v, a)	PyArg_Parse((v), "i", (a))
-#define PyArg_NoArgs(v)		PyArg_Parse(v, "")
+#define PyArg_GetInt(v, a)      PyArg_Parse((v), "i", (a))
+#define PyArg_NoArgs(v)         PyArg_Parse(v, "")
 
 /* Convert a possibly signed character to a nonnegative int */
 /* XXX This assumes characters are 8 bits wide */
 #ifdef __CHAR_UNSIGNED__
-#define Py_CHARMASK(c)		(c)
+#define Py_CHARMASK(c)          (c)
 #else
-#define Py_CHARMASK(c)		((c) & 0xff)
+#define Py_CHARMASK(c)          ((c) & 0xff)
 #endif
 
 #include "pyfpe.h"