diff --git a/core/src/main/scala/org/apache/spark/util/Utils.scala b/core/src/main/scala/org/apache/spark/util/Utils.scala
index eafb44436620..048c6ebfa748 100644
--- a/core/src/main/scala/org/apache/spark/util/Utils.scala
+++ b/core/src/main/scala/org/apache/spark/util/Utils.scala
@@ -442,7 +442,7 @@ private[spark] object Utils extends Logging with SparkClassUtils {
     // `file` and `localhost` are not used. Just to prevent URI from parsing `fileName` as
     // scheme or host. The prefix "/" is required because URI doesn't accept a relative path.
     // We should remove it after we get the raw path.
-    encodeRelativeUnixPathToURIRawPath(fileName).substring(1)
+    encodeRelativeUnixPathToURIRawPath(fileName)
   }
 
   /**
@@ -453,7 +453,7 @@ private[spark] object Utils extends Logging with SparkClassUtils {
     // `file` and `localhost` are not used. Just to prevent URI from parsing `fileName` as
     // scheme or host. The prefix "/" is required because URI doesn't accept a relative path.
     // We should remove it after we get the raw path.
-    new URI("file", null, "localhost", -1, "/" + path, null, null).getRawPath
+    new URI("file", null, "localhost", -1, "/" + path, null, null).getRawPath.substring(1)
   }
 
   /**