diff --git a/project/Util.scala b/project/Util.scala
index 747fb80c5..ea8845988 100644
--- a/project/Util.scala
+++ b/project/Util.scala
@@ -28,8 +28,15 @@ object Util
 	def testedBaseProject(path: File, nameString: String) = baseProject(path, nameString) settings(includeTestDependencies := true, testDependencies)
 	
 	lazy val javaOnly = Seq[Setting[_]](/*crossPaths := false, */compileOrder := CompileOrder.JavaThenScala, unmanagedSourceDirectories in Compile <<= Seq(javaSource in Compile).join)
-	lazy val base: Seq[Setting[_]] = Seq(scalacOptions ++= Seq("-Xelide-below", "0", "-feature", "-language:implicitConversions", "-language:postfixOps",
-                    "-language:higherKinds", "-language:existentials"), projectComponent) ++ Licensed.settings
+	lazy val base: Seq[Setting[_]] = baseScalacOptions ++ Licensed.settings
+	lazy val baseScalacOptions = Seq(
+		projectComponent,
+		scalacOptions ++= Seq("-Xelide-below", "0"),
+		scalacOptions <++= scalaVersion map CrossVersion.partialVersion map {
+			case Some((2, 9)) => Nil // support 2.9 for some subprojects for the Scala Eclipse IDE
+			case _ =>  Seq("-feature", "-language:implicitConversions", "-language:postfixOps", "-language:higherKinds", "-language:existentials")
+		}
+	)
 	
 	def testDependencies = libraryDependencies <++= includeTestDependencies { incl =>
 		if(incl) Seq(