diff --git a/nextflow_schema.json b/nextflow_schema.json
index 59131b6..5c60775 100644
--- a/nextflow_schema.json
+++ b/nextflow_schema.json
@@ -753,7 +753,10 @@
     "properties": {
         "preprocessing_qc_tool": {
             "type": "string",
-            "default": "fastqc"
+            "default": "fastqc",
+            "enum": ["fastqc", "falco"],
+            "help_text": "Falco is designed as a drop-in replacement for FastQC but written in C++ for faster computation. We particularly recommend using falco when using long reads (due to reduced memory constraints), however is also applicable for short reads.",
+            "description": "Specify the tool used for quality control of raw sequencing reads"
         }
     }
 }