diff --git a/src/ai.rs b/src/ai.rs
index 816ca3a..803a0be 100644
--- a/src/ai.rs
+++ b/src/ai.rs
@@ -63,7 +63,8 @@ impl SearchResult {
     }
 
     pub fn similarity(&self) -> f64 {
-        total_score(&self.chunks) * (self.chunks.len() as f64 / self.total_chunks as f64)
+        total_score(&self.chunks)
+            * (f64::from(self.chunks.len() as u32) / f64::from(self.total_chunks))
     }
 }