diff --git a/bwa.wdl b/bwa.wdl
index 7c4627a17b257b8f67710a57efcc2357de1df13e..9c717ccd789bdde15d9a5f033f7efa82d49386be 100644
--- a/bwa.wdl
+++ b/bwa.wdl
@@ -12,7 +12,7 @@ task Mem {
 
         String? picardJar
 
-        Int threads = 1
+        Int threads = 2
         Int memory = 8
         Int picardMemory = 4
     }
diff --git a/gatk.wdl b/gatk.wdl
index a43240529c85880d139b85c6c0f6a6a86298a8c9..512666fc2a863e4a7a5113305866221b0c63a7a5 100644
--- a/gatk.wdl
+++ b/gatk.wdl
@@ -187,7 +187,7 @@ task GenotypeGVCFs {
     input {
         String? preCommand
         Array[File]+ gvcfFiles
-        Array[File]+ gvcfFileIndex
+        Array[File]+ gvcfFilesIndex
         Array[File]+ intervals
 
         String outputPath