diff --git a/modules/bcftools/roh/main.nf b/modules/bcftools/roh/main.nf
index 890b6fad..83ac4e65 100644
--- a/modules/bcftools/roh/main.nf
+++ b/modules/bcftools/roh/main.nf
@@ -9,7 +9,7 @@ process BCFTOOLS_ROH {
 
     input:
     tuple val(meta), path(vcf), path(tbi)
-    path af_file
+    tuple path(af_file), path(af_file_tbi)
     path genetic_map
     path regions_file
     path samples_file
diff --git a/modules/bcftools/roh/meta.yml b/modules/bcftools/roh/meta.yml
index fd03d4ce..fa0fd088 100644
--- a/modules/bcftools/roh/meta.yml
+++ b/modules/bcftools/roh/meta.yml
@@ -23,6 +23,9 @@ input:
   - af_file:
       type: file
       description: "Read allele frequencies from a tab-delimited file containing the columns: CHROM\tPOS\tREF,ALT\tAF."
+  - af_file_tbi:
+      type: file
+      description: "tbi index of af_file."
   - genetic_map:
       type: file
       description: "Genetic map in the format required also by IMPUTE2."
diff --git a/tests/modules/bcftools/roh/main.nf b/tests/modules/bcftools/roh/main.nf
index 3eb534b6..3a2ef640 100644
--- a/tests/modules/bcftools/roh/main.nf
+++ b/tests/modules/bcftools/roh/main.nf
@@ -10,7 +10,7 @@ workflow test_bcftools_roh {
              file(params.test_data['sarscov2']['illumina']['test_vcf_gz'], checkIfExists: true),
              file(params.test_data['sarscov2']['illumina']['test_vcf_gz_tbi'], checkIfExists: true)]
 
-    af_file = []
+    af_file = [[],[]]
     gen_map = []
     regions = []
     targets = []
@@ -25,7 +25,7 @@ workflow test_bcftools_roh_stub {
              file(params.test_data['sarscov2']['illumina']['test_vcf_gz'], checkIfExists: true),
              file(params.test_data['sarscov2']['illumina']['test_vcf_gz_tbi'], checkIfExists: true)]
 
-    af_file = []
+    af_file = [[],[]]
     gen_map = []
     regions = []
     targets = []