diff --git a/gatk.wdl b/gatk.wdl
index cc8f830f29f16edf74f91df2f5655406ebd855c0..0ab30fc18de79b75e53ece5ba4ae3e768f3436ca 100644
--- a/gatk.wdl
+++ b/gatk.wdl
@@ -109,7 +109,7 @@ task CombineGVCFs {
     command {
         set -e
         mkdir -p $(dirname ~{outputPath})
-        gatk --java-options -Xmx~{javaXmx}G \
+        gatk --java-options -Xmx~{javaXmx} \
         CombineGVCFs \
         -R ~{referenceFasta} \
         -O ~{outputPath} \
diff --git a/scripts b/scripts
index 73c54827e729279f9833f26dfe8fd5e9848bbd91..aa44abaa6b5d1e1cd0cbe175b4ebc72c7bb1eaa4 160000
--- a/scripts
+++ b/scripts
@@ -1 +1 @@
-Subproject commit 73c54827e729279f9833f26dfe8fd5e9848bbd91
+Subproject commit aa44abaa6b5d1e1cd0cbe175b4ebc72c7bb1eaa4