diff --git a/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/VariantEffectPredictor.scala b/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/VariantEffectPredictor.scala
index e045332c2122699c997aef424c5dcfb6403b3297..281712a2969578652ba11c9ff269771d2d54cfb5 100644
--- a/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/VariantEffectPredictor.scala
+++ b/biopet-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/VariantEffectPredictor.scala
@@ -302,9 +302,9 @@ class VariantEffectPredictor(val root: Configurable) extends BiopetCommandLineFu
 
     (for ((header, headerIndex) <- headers) yield {
       val name = header.stripPrefix("[").stripSuffix("]")
-      name -> (contents.drop(headerIndex + 1).takeWhile(!isHeader(_)).map { line =>
+      name.replaceAll(" ", "_") -> (contents.drop(headerIndex + 1).takeWhile(!isHeader(_)).map { line =>
         val values = line.split("\t", 2)
-        values.head -> tryToParseNumber(values.last).getOrElse(0)
+        values.head.replaceAll(" ", "_") -> tryToParseNumber(values.last).getOrElse(0)
       }.toMap)
     }).toMap
   }