diff --git a/src/CommandLineRouter.hs b/src/CommandLineRouter.hs
index b77b0e6cb..43b50ce37 100644
--- a/src/CommandLineRouter.hs
+++ b/src/CommandLineRouter.hs
@@ -21,10 +21,10 @@ main =
         [] ->
           putStrLn usageMessage
 
-        "--version" ->
+        ["--version"] ->
           putStrLn $ Pkg.versionToString Compiler.version
 
-        "-v" ->
+        ["-v"] ->
           putStrLn $ Pkg.versionToString Compiler.version
 
         command : args ->