diff --git a/spades.wdl b/spades.wdl
index 1f246d48d45f9a7e5f80c0634563d06e1c6fc2d1..3975dd32e3bdff906b1127d93a5aa8f3ca714e8a 100644
--- a/spades.wdl
+++ b/spades.wdl
@@ -34,16 +34,16 @@ task Spades {
         File? tslrContigs
         File? trustedContigs
         File? untrustedContigs
-        Boolean singleCell = False
-        Boolean metagenomic = False
-        Boolean rna = False
-        Boolean plasmid = False
-        Boolean ionTorrent = False
-        Boolean onlyErrorCorrection = False
-        Boolean onlyAssembler = False
-        Boolean careful = False
-        Boolean disableGzipOutput = False
-        Boolean disableRepeatResolution = False
+        Boolean singleCell = false
+        Boolean metagenomic = false
+        Boolean rna = false
+        Boolean plasmid = false
+        Boolean ionTorrent = false
+        Boolean onlyErrorCorrection = false
+        Boolean onlyAssembler = false
+        Boolean careful = false
+        Boolean disableGzipOutput = false
+        Boolean disableRepeatResolution = false
         File? dataset
         File? tmpDir
         String? k