diff --git a/test/Verifier/2004-01-22-FloatNormalization.ll b/test/Verifier/2004-01-22-FloatNormalization.ll
index 8fbfe19..c5886c0 100644
--- a/test/Verifier/2004-01-22-FloatNormalization.ll
+++ b/test/Verifier/2004-01-22-FloatNormalization.ll
@@ -1,4 +1,4 @@
-; RUN: llvm-as < %s -o /dev/null -f
+; RUN: not llvm-as < %s -o /dev/null -f
 ; XFAIL: *
 
 ; make sure that invalid 'float' values are caught.