diff --git a/main/Act.scala b/main/Act.scala
index afd53ce83..cb10b8909 100644
--- a/main/Act.scala
+++ b/main/Act.scala
@@ -120,10 +120,12 @@ object Act
 	def configs(explicit: ParsedAxis[String], defaultConfigs: Option[ResolvedReference] => Seq[String], proj: Option[ResolvedReference], index: KeyIndex): Seq[Option[String]] =
 		explicit match
 		{
-			case Omitted => None +: defaultConfigs(proj).flatMap(nonEmptyConfig(index, proj))
+			case Omitted => None +: defaultConfigurations(proj, index, defaultConfigs).flatMap(nonEmptyConfig(index, proj))
 			case ParsedGlobal =>  None :: Nil
 			case pv: ParsedValue[String] => Some(pv.value) :: Nil
 		}
+	def defaultConfigurations(proj: Option[ResolvedReference], index: KeyIndex, defaultConfigs: Option[ResolvedReference] => Seq[String]): Seq[String] =
+		if(index exists proj) defaultConfigs(proj) else Nil
 	def nonEmptyConfig(index: KeyIndex, proj: Option[ResolvedReference]): String => Seq[Option[String]] = config =>
 		if(index.isEmpty(proj, Some(config))) Nil else Some(config) :: Nil
 
@@ -196,7 +198,7 @@ object Act
 	}
 	def resolvedReference(index: KeyIndex, currentBuild: URI, trailing: Parser[_]): Parser[ResolvedReference] =
 	{
-		def projectID(uri: URI) = token( examplesStrict(ID, index projects uri, "project ID") <~ trailing )
+		def projectID(uri: URI) = token( examples(ID, index projects uri, "project ID") <~ trailing )
 		def projectRef(uri: URI) = projectID(uri) map { id => ProjectRef(uri, id) }
 
 		val uris = index.buildURIs
diff --git a/main/KeyIndex.scala b/main/KeyIndex.scala
index c3456b808..c7ae46a63 100644
--- a/main/KeyIndex.scala
+++ b/main/KeyIndex.scala
@@ -20,6 +20,7 @@ object KeyIndex
 	def combine(indices: Seq[KeyIndex]): KeyIndex = new KeyIndex {
 		def buildURIs = concat(_.buildURIs)
 		def projects(uri: URI) = concat(_.projects(uri))
+		def exists(project: Option[ResolvedReference]): Boolean = indices.exists(_ exists project)
 		def configs(proj: Option[ResolvedReference]) = concat(_.configs(proj))
 		def tasks(proj: Option[ResolvedReference], conf: Option[String]) = concat(_.tasks(proj, conf))
 		def tasks(proj: Option[ResolvedReference], conf: Option[String], key: String) = concat(_.tasks(proj, conf, key))
@@ -46,6 +47,7 @@ trait KeyIndex
 
 	def buildURIs: Set[URI]
 	def projects(uri: URI): Set[String]
+	def exists(project: Option[ResolvedReference]): Boolean
 	def configs(proj: Option[ResolvedReference]): Set[String]
 	def tasks(proj: Option[ResolvedReference], conf: Option[String]): Set[AttributeKey[_]]
 	def tasks(proj: Option[ResolvedReference], conf: Option[String], key: String): Set[AttributeKey[_]]
@@ -92,6 +94,11 @@ private final class KeyIndex0(val data: BuildIndex) extends ExtendableKeyIndex
 {
 	def buildURIs: Set[URI] = data.builds
 	def projects(uri: URI): Set[String] = data.projectIndex(Some(uri)).projects
+	def exists(proj: Option[ResolvedReference]): Boolean =
+	{
+		val (build, project) = parts(proj)
+		data.data.get(build).flatMap(_.data.get(project)).isDefined
+	}
 	def configs(project: Option[ResolvedReference]): Set[String] = confIndex(project).configs
 	def tasks(proj: Option[ResolvedReference], conf: Option[String]): Set[AttributeKey[_]] = keyIndex(proj, conf).tasks
 	def tasks(proj: Option[ResolvedReference], conf: Option[String], key: String): Set[AttributeKey[_]] = keyIndex(proj, conf).tasks(key)