diff --git a/syntax/scala.vim b/syntax/scala.vim
index bb0fe0a..6089369 100644
--- a/syntax/scala.vim
+++ b/syntax/scala.vim
@@ -188,7 +188,7 @@ hi link scalaTypeOperator Keyword
 hi link scalaTypeAnnotationParameter Function
 
 syn match scalaShebang "\%^#!.*" display
-syn region scalaMultilineComment start="/\*" end="\*/" contains=scalaMultilineComment,scalaDocLinks,scalaParameterAnnotation,scalaCommentAnnotation,scalaTodo,scalaCommentCodeBlock,@Spell keepend fold
+syn region scalaMultilineComment start="/\*" end="\*/" contains=scalaMultilineComment,scalaDocLinks,scalaParameterAnnotation,scalaCommentAnnotation,scalaTodo,scalaCommentCodeBlock,@Spell keepend extend fold
 syn match scalaCommentAnnotation "@[_A-Za-z0-9$]\+" contained
 syn match scalaParameterAnnotation "\%(@tparam\|@param\|@see\)" nextgroup=scalaParamAnnotationValue skipwhite contained
 syn match scalaParamAnnotationValue /[.`_A-Za-z0-9$]\+/ contained
diff --git a/syntax/testfile.scala b/syntax/testfile.scala
index 1790c6f..d9841d1 100644
--- a/syntax/testfile.scala
+++ b/syntax/testfile.scala
@@ -57,6 +57,8 @@ class ScalaClass(i: Int = 12, b: Trait[A, Trait[B, C]]) extends B with SomeTrait
    *
    * <li></li>
    *
+   * /* a nested block comment */
+   *
    * @param parameter Explanation of the parameter. Speling.
    * @return TODO
    */