diff --git a/compile/interface/src/main/scala/xsbt/API.scala b/compile/interface/src/main/scala/xsbt/API.scala
index 52218d145..b64770cb5 100644
--- a/compile/interface/src/main/scala/xsbt/API.scala
+++ b/compile/interface/src/main/scala/xsbt/API.scala
@@ -278,8 +278,10 @@ final class API(val global: CallbackGlobal) extends Compat
 	private def getModifiers(s: Symbol): xsbti.api.Modifiers =
 	{
 		import Flags._
-		new xsbti.api.Modifiers(s.hasFlag(ABSTRACT) || s.hasFlag(DEFERRED), s.hasFlag(OVERRIDE),
-			s.isFinal, s.hasFlag(SEALED), isImplicit(s), s.hasFlag(LAZY), hasMacro(s))
+		val absOver = s.hasFlag(ABSOVERRIDE)
+		val abs = s.hasFlag(ABSTRACT) || s.hasFlag(DEFERRED) || absOver
+		val over = s.hasFlag(OVERRIDE) || absOver
+		new xsbti.api.Modifiers(abs, over, s.isFinal, s.hasFlag(SEALED), isImplicit(s), s.hasFlag(LAZY), hasMacro(s))
 	}
 
 	private def isImplicit(s: Symbol) = s.hasFlag(Flags.IMPLICIT)
diff --git a/sbt/src/sbt-test/source-dependencies/abstract-override/A.scala b/sbt/src/sbt-test/source-dependencies/abstract-override/A.scala
new file mode 100644
index 000000000..43b95b9e9
--- /dev/null
+++ b/sbt/src/sbt-test/source-dependencies/abstract-override/A.scala
@@ -0,0 +1,3 @@
+trait A {
+	def x: Int
+}
diff --git a/sbt/src/sbt-test/source-dependencies/abstract-override/B.scala b/sbt/src/sbt-test/source-dependencies/abstract-override/B.scala
new file mode 100644
index 000000000..c7569ba51
--- /dev/null
+++ b/sbt/src/sbt-test/source-dependencies/abstract-override/B.scala
@@ -0,0 +1,3 @@
+trait B extends A {
+	override def x = 2
+}
\ No newline at end of file
diff --git a/sbt/src/sbt-test/source-dependencies/abstract-override/C.scala b/sbt/src/sbt-test/source-dependencies/abstract-override/C.scala
new file mode 100644
index 000000000..24d656d4a
--- /dev/null
+++ b/sbt/src/sbt-test/source-dependencies/abstract-override/C.scala
@@ -0,0 +1,3 @@
+trait C extends A {
+	def x = 5
+}
\ No newline at end of file
diff --git a/sbt/src/sbt-test/source-dependencies/abstract-override/D.scala b/sbt/src/sbt-test/source-dependencies/abstract-override/D.scala
new file mode 100644
index 000000000..1f0d0a274
--- /dev/null
+++ b/sbt/src/sbt-test/source-dependencies/abstract-override/D.scala
@@ -0,0 +1 @@
+trait D extends C with B
\ No newline at end of file
diff --git a/sbt/src/sbt-test/source-dependencies/abstract-override/changes/C2.scala b/sbt/src/sbt-test/source-dependencies/abstract-override/changes/C2.scala
new file mode 100644
index 000000000..5cb6be980
--- /dev/null
+++ b/sbt/src/sbt-test/source-dependencies/abstract-override/changes/C2.scala
@@ -0,0 +1,3 @@
+trait C extends A {
+	abstract override def x = super.x + 5
+}
\ No newline at end of file
diff --git a/sbt/src/sbt-test/source-dependencies/abstract-override/test b/sbt/src/sbt-test/source-dependencies/abstract-override/test
new file mode 100644
index 000000000..8021d5ce2
--- /dev/null
+++ b/sbt/src/sbt-test/source-dependencies/abstract-override/test
@@ -0,0 +1,3 @@
+> compile
+$ copy-file changes/C2.scala C.scala
+-> compile
\ No newline at end of file