From 07c60ba5a9bd3d2dc6ff92ea8b8f315c7b2b6745 Mon Sep 17 00:00:00 2001
From: Peter van 't Hof <p.j.van_t_hof@lumc.nl>
Date: Tue, 29 Dec 2015 13:34:27 +0100
Subject: [PATCH] Fixed emty list

---
 .../nl/lumc/sasc/biopet/pipelines/gears/CombineReads.scala    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/public/gears/src/main/scala/nl/lumc/sasc/biopet/pipelines/gears/CombineReads.scala b/public/gears/src/main/scala/nl/lumc/sasc/biopet/pipelines/gears/CombineReads.scala
index 40b40c141..608afa3c0 100644
--- a/public/gears/src/main/scala/nl/lumc/sasc/biopet/pipelines/gears/CombineReads.scala
+++ b/public/gears/src/main/scala/nl/lumc/sasc/biopet/pipelines/gears/CombineReads.scala
@@ -25,8 +25,8 @@ class CombineReads(val root: Configurable) extends QScript with SummaryQScript w
 
   private lazy val flash = new Flash(this)
 
-  private lazy val forwardPrimers: List[String] = config("forward_primers")
-  private lazy val reversePrimers: List[String] = config("reverse_primers")
+  private lazy val forwardPrimers: List[String] = config("forward_primers", default = Nil)
+  private lazy val reversePrimers: List[String] = config("reverse_primers", default = Nil)
 
   def combinedFastq: File = if ((forwardPrimers :: reversePrimers).nonEmpty)
     swapExt(outputDir, flash.combinedFastq, ".fastq.gz", ".clip.fastq.gz")
-- 
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