diff --git a/src/validation/quartiles-categorized.scala b/src/validation/quartiles-categorized.scala
index 09cd1127933c62c8c4f985ee227e3f0757169dba..f71a8745be0399e76025f70736825c134a5d9ef3 100644
--- a/src/validation/quartiles-categorized.scala
+++ b/src/validation/quartiles-categorized.scala
@@ -14,7 +14,7 @@ import scala.collection.mutable.{ Map => MMap }
 import scala.io.Source
 
 @main
-def main(input: Path, output: Path, mapping: Path, years: Seq[Int] = 1999 to 2015, threshold: Double = 0.1, bufSize: Int = 4194304) = {
+def main(input: Path, output: Path, mapping: Path, years: Seq[Int] = 1999 to 2015, threshold: Double = 0, bufSize: Int = 4194304) = {
 
   // --- grid id to category mapping
 
diff --git a/src/validation/quartiles-categorized_mean.scala b/src/validation/quartiles-categorized_mean.scala
index 72e9aaca95621172fc3d3512e72f1ee534acb14a..14063133f2ff4cc0c846f5204e611a8f73f35764 100644
--- a/src/validation/quartiles-categorized_mean.scala
+++ b/src/validation/quartiles-categorized_mean.scala
@@ -14,7 +14,7 @@ import scala.collection.mutable.{ Map => MMap }
 import scala.io.Source
 
 @main
-def main(input: Path, output: Path, mapping: Path, years: Seq[Int] = 1999 to 2015, threshold: Double = 0.1, bufSize: Int = 4194304) = {
+def main(input: Path, output: Path, mapping: Path, years: Seq[Int] = 1999 to 2015, threshold: Double = 0, bufSize: Int = 4194304) = {
 
   // --- grid id to category mapping