diff --git a/test/Transforms/InstCombine/compare-signs.ll b/test/Transforms/InstCombine/compare-signs.ll
index 991020a0673..ba638ba36fc 100644
--- a/test/Transforms/InstCombine/compare-signs.ll
+++ b/test/Transforms/InstCombine/compare-signs.ll
@@ -1,4 +1,4 @@
-; RUN: opt %S -instcombine -S | FileCheck %S
+; RUN: opt %s -instcombine -S | FileCheck %s
 ; PR5438
 
 ; TODO: This should also optimize down.