diff --git a/public/biopet-tools/src/main/scala/nl/lumc/sasc/biopet/tools/SnptestToVcf.scala b/public/biopet-tools/src/main/scala/nl/lumc/sasc/biopet/tools/SnptestToVcf.scala
index 470c950967b9cd435f06623a9c7c97f4d33163e4..481de58f5dc820875e31fd986bcc40a5dc64e61e 100644
--- a/public/biopet-tools/src/main/scala/nl/lumc/sasc/biopet/tools/SnptestToVcf.scala
+++ b/public/biopet-tools/src/main/scala/nl/lumc/sasc/biopet/tools/SnptestToVcf.scala
@@ -110,7 +110,7 @@ object SnptestToVcf extends ToolCommand {
         .stop(end)
         .noGenotypes()
 
-      val infoBuilder = infoKeys.foldLeft(builder) { case (a, b) => a.attribute("ST_" + b, values(headerMap(b))) }
+      val infoBuilder = infoKeys.foldLeft(builder) { case (a, b) => a.attribute("ST_" + b, values(headerMap(b)).replaceAll(";", ",")) }
 
       writer.add(builder.id(rsid.replaceAll(";", ",")).make())