diff --git a/src/bin/fingerprint.rs b/src/bin/fingerprint.rs
index 9102a55..595a026 100644
--- a/src/bin/fingerprint.rs
+++ b/src/bin/fingerprint.rs
@@ -16,9 +16,9 @@ use walkdir::WalkDir;
 #[derive(Parser, Debug)]
 #[command(author, version, about, long_about = None)]
 struct Args {
-    /// Number years to search through
-    #[arg(short, long, default_value_t = 1)]
-    years: usize,
+    /// Number days to search through
+    #[arg(short, long, default_value_t = 365)]
+    days: i64,
 
     /// Enable verbose logging
     #[arg(short, long, default_value_t = false)]
@@ -38,9 +38,8 @@ struct Args {
 
 fn main() -> anyhow::Result<()> {
     let args = Args::parse();
-    let n = 1;
-    // Just check messages from the last N years.
-    let max_age = 60 * 60 * 24 * 365 * n;
+    // Just check messages from the last N days.
+    let max_age = 60 * 60 * 24 * args.days;
     let start = std::time::Instant::now();
     let unix_secs = SystemTime::now()
         .duration_since(UNIX_EPOCH)