diff --git a/include/missing.h b/include/missing.h
index ddb6a05e5..2e7c40e45 100644
--- a/include/missing.h
+++ b/include/missing.h
@@ -240,11 +240,11 @@ typedef struct sigaction sigaction_t;
 #ifndef HAVE_GETPROGNAME
 # ifdef HAVE___PROGNAME
 extern const char *__progname;
-#  define getprogname()          (__progname)
+#  define getprogname()		(__progname)
 # else
 const char *getprogname(void);
 void setprogname(const char *);
-#endif /* HAVE___PROGNAME */
+# endif /* HAVE___PROGNAME */
 #endif /* !HAVE_GETPROGNAME */
 
 /*