diff --git a/common.wdl b/common.wdl
index 92fd586ce7a9e76572c334faf7e22c6430e910b2..87dcce1391bc938848fee0f551cd230de05af3f5 100644
--- a/common.wdl
+++ b/common.wdl
@@ -174,6 +174,12 @@ task TextToFile {
         File out = outputFile
     }
 
+    parameter_meta {
+        text: {description: "The text to print", category: "required"}
+        outputFile: {description: "The name of the output file", category: "common"}
+        dockerImage: {description: "The docker image used for this task. Changing this may result in errors which the developers may choose not to address.",
+                      category: "advanced"}
+    }
     runtime {
         memory: "1G"
         docker: dockerImage
diff --git a/gatk.wdl b/gatk.wdl
index b44620aea45bc4be45d4c6a491224bf0a1c85bb9..0b4c71c701b6d7a2ef1013b6ddeef8f77ff6c612 100644
--- a/gatk.wdl
+++ b/gatk.wdl
@@ -342,8 +342,10 @@ task HaplotypeCallerGvcf {
     parameter_meta {
         inputBams: {description: "The BAM files on which to perform variant calling.", category: "required"}
         inputBamsIndex: {description: "The indexes for the input BAM files.", category: "required"}
-        intervalList: {description: "Bed files or interval lists describing the regions to operate on.", category: "required"}
+        intervalList: {description: "Bed files or interval lists describing the regions to operate on.", category: "common"}
+        excludeIntervalList: {description: "Bed files or interval lists describing the regions to NOT operate on.", category: "common"}
         gvcfPath: {description: "The location to write the output GVCF to.", category: "required"}
+        ploidy: {description: "The ploidy with which the variants should be called.", category: "common"}
         referenceFasta: {description: "The reference fasta file which was also used for mapping.",
                          category: "required"}
         referenceFastaDict: {description: "The sequence dictionary associated with the reference fasta file.",