diff --git a/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/VariantEffectPredictor.scala b/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/VariantEffectPredictor.scala
index 84876820d0d025a2134a3e76ffcf70aa2988092c..b124a08aa5944beebff8507c09646618c4bc0ab7 100644
--- a/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/VariantEffectPredictor.scala
+++ b/public/biopet-framework/src/main/scala/nl/lumc/sasc/biopet/extensions/VariantEffectPredictor.scala
@@ -144,9 +144,9 @@ class VariantEffectPredictor(val root: Configurable) extends BiopetCommandLineFu
   override def beforeGraph(): Unit = {
     super.beforeGraph()
     if (!cache && !database) {
-      throw new IllegalArgumentException("Must supply either cache or database")
+      throw new IllegalArgumentException("Must supply either cache or database for VariantEffectPredictor")
     } else if (cache && dir.isEmpty) {
-      throw new IllegalArgumentException("Must supply dir to cache")
+      throw new IllegalArgumentException("Must supply dir to cache for VariantEffectPredictor")
     }
   }