diff --git a/ChangeLog b/ChangeLog
index ce83032a63..351b1d18a3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Jan 10 09:18:03 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* eval.c (rb_require_safe): prevent extension from loading twice.
+	  fixed: [ruby-dev:29523]
+
 Sat Sep  9 23:55:28 2006  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* file.c (rb_f_test): test(0) should not have any special
diff --git a/eval.c b/eval.c
index 66347120c1..7bc11350c1 100644
--- a/eval.c
+++ b/eval.c
@@ -7068,15 +7068,15 @@ rb_require_safe(VALUE fname, int safe)
 	    }
 	    else {
 		ruby_safe_level = 0;
+		/* loading ruby library should be serialized. */
+		if (!loading_tbl) {
+		    loading_tbl = st_init_strtable();
+		}
+		/* partial state */
+		ftptr = ruby_strdup(RSTRING_PTR(path));
+		st_insert(loading_tbl, (st_data_t)ftptr, (st_data_t)curr_thread);
 		switch (found) {
 		  case 'r':
-		    /* loading ruby library should be serialized. */
-		    if (!loading_tbl) {
-			loading_tbl = st_init_strtable();
-		    }
-		    /* partial state */
-		    ftptr = ruby_strdup(RSTRING_PTR(path));
-		    st_insert(loading_tbl, (st_data_t)ftptr, (st_data_t)curr_thread);
 		    rb_load(path, 0);
 		    break;