diff --git a/winsup/cygwin/include/sys/cygwin.h b/winsup/cygwin/include/sys/cygwin.h
index fc91d04ac..805671ef9 100644
--- a/winsup/cygwin/include/sys/cygwin.h
+++ b/winsup/cygwin/include/sys/cygwin.h
@@ -54,9 +54,9 @@ enum
   CCP_CONVTYPE_MASK = 3,
 
   /* Or these values to the above as needed. */
-  CCP_ABSOLUTE = 0,	  	/* Request absolute path (default). 	*/
-  CCP_RELATIVE = 0x100,    	/* Request to keep path relative.   	*/
-  CCP_PROC_CYGDRIVE = 0x200,   	/* Request to return /proc/cygdrive
+  CCP_ABSOLUTE = 0,		/* Request absolute path (default).	*/
+  CCP_RELATIVE = 0x100,		/* Request to keep path relative.	*/
+  CCP_PROC_CYGDRIVE = 0x200,	/* Request to return /proc/cygdrive
 				   path (only with CCP_*_TO_POSIX).   */
 
   CCP_CONVFLAGS_MASK = 0x300,