diff --git a/compiler/ghci/InteractiveUI.hs b/compiler/ghci/InteractiveUI.hs
index e7df1bd15674b61e6d995154d2412e2524c20bcb..b0175601830105c38081c8492dc691cd428d67f0 100644
--- a/compiler/ghci/InteractiveUI.hs
+++ b/compiler/ghci/InteractiveUI.hs
@@ -54,6 +54,7 @@ import System.Posix hiding (getEnv)
 #else
 import GHC.ConsoleHandler ( flushConsole )
 import qualified System.Win32
+import System.FilePath
 #endif
 
 #ifdef USE_READLINE