diff --git a/workflow/Snakefile b/workflow/Snakefile
index 6b0bed8fe92317e941637b52454b747c27ead81f..8898894d2dc34e25a4a0910bf1ab67eb02d02acb 100644
--- a/workflow/Snakefile
+++ b/workflow/Snakefile
@@ -1486,30 +1486,24 @@ rule alfa_qc:
     '''
     input:
         plus = lambda wildcards:
-            expand(
-                os.path.join(
-                    config["output_dir"],
-                    "samples",
-                    "{sample}",
-                    "ALFA",
-                    "{unique}",
-                    "{sample}.{unique}.plus.bg"),
-                sample=wildcards.sample,
-                unique=alfa_dict[wildcards.renamed_unique]
+            os.path.join(
+                config["output_dir"],
+                "samples",
+                wildcards.sample,
+                "ALFA",
+                alfa_dict[wildcards.renamed_unique],
+                wildcards.sample + "." + alfa_dict[wildcards.renamed_unique] + ".plus.bg"
             ),
 
         minus = lambda wildcards:
-            expand(
-                os.path.join(
-                    config["output_dir"],
-                    "samples",
-                    "{sample}",
-                    "ALFA",
-                    "{unique}",
-                    "{sample}.{unique}.minus.bg"),
-                sample=wildcards.sample,
-                unique=alfa_dict[wildcards.renamed_unique]
-            ),
+            os.path.join(
+                config["output_dir"],
+                "samples",
+                wildcards.sample,
+                "ALFA",
+                alfa_dict[wildcards.renamed_unique],
+                wildcards.sample + "." + alfa_dict[wildcards.renamed_unique] + ".minus.bg"
+                ),
 
         gtf = lambda wildcards:
             os.path.join(