diff --git a/workflows/amplicon_cov.smk b/workflows/amplicon_cov.smk
index df130c5..459bcda 100644
--- a/workflows/amplicon_cov.smk
+++ b/workflows/amplicon_cov.smk
@@ -75,4 +75,4 @@ rule get_coverage_for_batch:
     params:
         batch = "20240705_AAFH52MM5"
     input:
-        samples = output_dir + "{batch}/cov_heatmap.pdf"
\ No newline at end of file
+        samples = output_dir + "{params.batch}/cov_heatmap.pdf"
\ No newline at end of file