diff --git a/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/Tabix.scala b/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/Tabix.scala
index c1d88508dd2b8450b2548e6aac98267f47869a99..bc2b896b5fedf64fe53f3bb354558de7607a758e 100644
--- a/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/Tabix.scala
+++ b/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/Tabix.scala
@@ -20,6 +20,7 @@ class Tabix(val root: Configurable) extends BiopetCommandLineFunction {
   var p: Option[String] = config("p")
 
   executable = config("exe", default = "tabix")
+  override val versionExitcode = List(0, 1)
   override val versionRegex = """Version: (.*)""".r
   override def versionCommand = executable