diff --git a/cabal-testsuite/PackageTests/ConditionalAndImport/cabal.test.hs b/cabal-testsuite/PackageTests/ConditionalAndImport/cabal.test.hs
index b98162cfdce..fa625d21e7a 100644
--- a/cabal-testsuite/PackageTests/ConditionalAndImport/cabal.test.hs
+++ b/cabal-testsuite/PackageTests/ConditionalAndImport/cabal.test.hs
@@ -254,7 +254,7 @@ main = cabalTest . withRepo "repo" . recordMode RecordMarked $ do
   --  +-- yops/yops-9.config (no further imports)
   log "checking that we detect when the same config is imported via many different paths"
   yopping <- fails $ cabal' "v2-build" [ "--project-file=yops-0.project" ]
-  assertOutputContains "duplicate import of yops/yops-3.config" yopping
+  assertOutputContains (normalizeWindowsOutput "duplicate import of yops/yops-3.config") yopping
 
   log "checking bad conditional"
   badIf <- fails $ cabal' "v2-build" [ "--project-file=bad-conditional.project" ]