diff --git a/subworkflows/local/bam_variant_calling_manta/main.nf b/subworkflows/local/bam_variant_calling_manta/main.nf
index cfe3fa99..1eed4f9b 100644
--- a/subworkflows/local/bam_variant_calling_manta/main.nf
+++ b/subworkflows/local/bam_variant_calling_manta/main.nf
@@ -46,6 +46,10 @@ workflow BAM_VARIANT_CALLING_MANTA {
     //
 
     def ch_manta_input = ch_crams
+        .map { meta, cram, crai ->
+            def new_meta = meta + [caller:"manta"]
+            [ new_meta, cram, crai ]
+        }
         .combine(ch_contigs)
         .dump(tag: 'manta_input', pretty: true)