diff --git a/user/tb/interp.c b/user/tb/interp.c
index 5cff092..86d277c 100644
--- a/user/tb/interp.c
+++ b/user/tb/interp.c
@@ -189,7 +189,6 @@ bool interp_runstring(char *string, InterpResult **res, bool interactive) {
   *res = &RES;
   string_memset(RES.errmsg, 0, sizeof(RES.errmsg));
 
-  rt_init();
   bool ok = true;
   
   char *line = string_tokenizealloc_linecontinue(string, "\n");
diff --git a/user/tb/main.c b/user/tb/main.c
index b82599f..a1abfe0 100644
--- a/user/tb/main.c
+++ b/user/tb/main.c
@@ -4,6 +4,7 @@
 #include "interp.h"
 #include "macros.h"
 #include "config.h"
+#include "runtime.h"
 
 #define LINEBUF_MAX 1024
 
@@ -147,6 +148,7 @@ void main(void) {
   }
 
   set_config();
+  rt_init();
 
   do_file("base:/scripts/rc.tb");