diff -ru coreutils-6.9.orig/src/su.c coreutils-6.9/src/su.c
--- coreutils-6.9.orig/src/su.c	2007-04-19 12:05:12.000000000 +0200
+++ coreutils-6.9/src/su.c	2007-04-19 12:07:56.000000000 +0200
@@ -387,6 +387,9 @@
 	      xsetenv ("USER", pw->pw_name);
 	      xsetenv ("LOGNAME", pw->pw_name);
 	    }
+          xsetenv ("PATH", (pw->pw_uid
+	   	            ? DEFAULT_LOGIN_PATH
+		            : DEFAULT_ROOT_LOGIN_PATH));	    
 	}
     }
 }