diff --git a/ChangeLog b/ChangeLog
index e02cb8500f..8c53fc3bfb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Oct 16 23:37:11 2008  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* compile.c (iseq_set_sequence): fix memory leak.
+
 Thu Oct 16 23:27:27 2008  Tanaka Akira  <akr@fsij.org>
 
 	* lib/test/unit.rb (assert_equal): avoid incompatible character
diff --git a/compile.c b/compile.c
index 6eeb2e4c4d..9ceacd6f00 100644
--- a/compile.c
+++ b/compile.c
@@ -1309,6 +1309,8 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 		    rb_compile_error(RSTRING_PTR(iseq->filename), iobj->line_no,
 				     "operand size miss! (%d for %d)",
 				     iobj->operand_size, len - 1);
+		    xfree(generated_iseq);
+		    xfree(insn_info_table);
 		    return 0;
 		}
 
@@ -1403,6 +1405,8 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
 		      default:
 			rb_compile_error(RSTRING_PTR(iseq->filename), iobj->line_no,
 					 "unknown operand type: %c", type);
+			xfree(generated_iseq);
+			xfree(insn_info_table);
 			return 0;
 		    }
 		}