diff --git a/src/Stack/Build/ExecutePackage.hs b/src/Stack/Build/ExecutePackage.hs
index 04804ebd86..9ef4fc1a8a 100644
--- a/src/Stack/Build/ExecutePackage.hs
+++ b/src/Stack/Build/ExecutePackage.hs
@@ -1255,7 +1255,7 @@ singleTest topts testsToRun ac ee task installedMap = do
               else do
                 unless expectFailure $
                   logError $
-                    displayShow $ TestSuiteExeMissing
+                    fromString $ displayException $ TestSuiteExeMissing
                       (package.buildType == C.Simple)
                       exeName
                       (packageNameString package.name)
diff --git a/src/Stack/Types/Build/Exception.hs b/src/Stack/Types/Build/Exception.hs
index e5f375aecf..77ef8d012b 100644
--- a/src/Stack/Types/Build/Exception.hs
+++ b/src/Stack/Types/Build/Exception.hs
@@ -183,7 +183,7 @@ instance Exception BuildException where
       isSimpleBuildType $ concat
         [ "Test suite executable \""
         , exeName
-        , " not found for "
+        , "\" not found for "
         , pkgName'
         , ":test:"
         , testName