diff --git a/subworkflows/annotation.nf b/subworkflows/annotation.nf
index 7b1e5be..cc20bbb 100644
--- a/subworkflows/annotation.nf
+++ b/subworkflows/annotation.nf
@@ -64,7 +64,7 @@ workflow ANNOTATION {
     // Reassemble chunked eggnog output
     ch_annotations_to_merge = EGGNOG_MAPPER.out.annotations
         | map { meta, emapper -> 
-            def meta_new = meta.submap("assemblyid")
+            def meta_new = meta.subMap("assemblyid")
             [ meta_new, emapper ]
         }
         | groupTuple(by: 0)