diff --git a/test/Assembler/2002-10-13-ConstantEncodingProblem.ll b/test/Assembler/2002-10-13-ConstantEncodingProblem.llx
similarity index 92%
rename from test/Assembler/2002-10-13-ConstantEncodingProblem.ll
rename to test/Assembler/2002-10-13-ConstantEncodingProblem.llx
index e0811eeacf4..ce785c286a8 100644
--- a/test/Assembler/2002-10-13-ConstantEncodingProblem.ll
+++ b/test/Assembler/2002-10-13-ConstantEncodingProblem.llx
@@ -1,3 +1,5 @@
+; RUN: as < %s | dis
+
 %Domain = type { sbyte*, %List_o_links*, %D_tree_leaf*, %Domain* }
 %List_o_links = type { int, int, int, %List_o_links* }
 %D_tree_leaf = type { %Domain*, int, %D_tree_leaf* }