diff --git a/tcctest.c b/tcctest.c
index c49a1a8..85a1f66 100644
--- a/tcctest.c
+++ b/tcctest.c
@@ -209,7 +209,7 @@ void macro_test(void)
 #line 203 "test" 
     printf("__LINE__=%d __FILE__=%s\n",
            __LINE__, __FILE__);
-#line 206 "tcctest.c"
+#line 213 "tcctest.c"
 
     /* not strictly preprocessor, but we test it there */
 #ifdef C99_MACROS
@@ -265,7 +265,7 @@ int ret(a)
     return 0;
 }
 
-void ps(char *s)
+void ps(const char *s)
 {
     int c;
     while (1) {