diff --git a/mllib/src/main/scala/org/apache/spark/mllib/feature/IDF.scala b/mllib/src/main/scala/org/apache/spark/mllib/feature/IDF.scala
index 6b206e24eff42..b7543ea4c02ed 100644
--- a/mllib/src/main/scala/org/apache/spark/mllib/feature/IDF.scala
+++ b/mllib/src/main/scala/org/apache/spark/mllib/feature/IDF.scala
@@ -146,7 +146,7 @@ private object IDF {
          * we just omit changing those entries.
          */
         if(df(j) >= minDocFreq) {
-          inv(j) = math.log((m + 1.0)/ (df(j) + 1.0))
+          inv(j) = math.log((m + 1.0) / (df(j) + 1.0))
         }
         j += 1
       }