diff --git a/internal/util-logging/src/main/scala/sbt/internal/util/Terminal.scala b/internal/util-logging/src/main/scala/sbt/internal/util/Terminal.scala
index d44b7b91d..e5465fe63 100644
--- a/internal/util-logging/src/main/scala/sbt/internal/util/Terminal.scala
+++ b/internal/util-logging/src/main/scala/sbt/internal/util/Terminal.scala
@@ -297,7 +297,7 @@ object Terminal {
       // This approximates that both stdin and stdio are connected,
       // so by default color will be turned off for pipes and redirects.
       val hasConsole = Option(java.lang.System.console).isDefined
-      props.map(_.ansi).getOrElse(true) && hasConsole
+      props.map(_.color).getOrElse(hasConsole)
     }
     sys.props.get("sbt.log.noformat") match {
       case Some(_) => !java.lang.Boolean.getBoolean("sbt.log.noformat")
@@ -852,8 +852,7 @@ object Terminal {
         term.setEchoEnabled(true)
       }
     }
-    override def isColorEnabled: Boolean =
-      props.map(_.color).getOrElse(ConsoleAppender.formatEnabledInEnv)
+    override def isColorEnabled: Boolean = props.map(_.color).getOrElse(formatEnabledInEnv)
 
     override def isSupershellEnabled: Boolean =
       props
diff --git a/main-command/src/main/scala/sbt/internal/client/NetworkClient.scala b/main-command/src/main/scala/sbt/internal/client/NetworkClient.scala
index 7dcf49569..0250dfe86 100644
--- a/main-command/src/main/scala/sbt/internal/client/NetworkClient.scala
+++ b/main-command/src/main/scala/sbt/internal/client/NetworkClient.scala
@@ -1006,6 +1006,7 @@ object NetworkClient {
       i += 1
     }
     val base = new File("").getCanonicalFile
+    if (!sbtArguments.contains("-Dsbt.io.virtual=true")) sbtArguments += "-Dsbt.io.virtual=true"
     new Arguments(base, sbtArguments, commandArgs, completionArguments, sbtScript)
   }