diff --git a/util/io/IO.scala b/util/io/IO.scala
index afd993473..651a2d069 100644
--- a/util/io/IO.scala
+++ b/util/io/IO.scala
@@ -617,7 +617,7 @@ object IO
 		(new URI(dirStr)).normalize
 	}
 	/** Converts the given File to a URI.  If the File is relative, the URI is relative, unlike File.toURI*/
-	def toURI(f: File): URI  =  if(f.isAbsolute) f.toURI else new URI(f.getPath)
+	def toURI(f: File): URI  =  if(f.isAbsolute) f.toURI else new URI(normalizeName(f.getPath))
 	def resolve(base: File, f: File): File  =
 	{
 		assertAbsolute(base)