diff --git a/src/nf_modules/picard/main.nf b/src/nf_modules/picard/main.nf
index d788992704fa1c5dd7f2124719d1e5b8638f19ab..aa24096cef2ee44322e8648532b2a7ebe092411a 100644
--- a/src/nf_modules/picard/main.nf
+++ b/src/nf_modules/picard/main.nf
@@ -33,13 +33,13 @@ process index_fasta {
   input:
     tuple val(file_id), path(fasta)
   output:
-    tuple val(file_id), path("*.dict"), emit: index 
+    tuple val(file_id), path("*.dict"), emit: index
 
   script:
 """
 PicardCommandLine CreateSequenceDictionary \
 REFERENCE=${fasta} \
-OUTPUT=${fasta}.dict
+OUTPUT=${fasta.baseName}.dict
 """
 }