diff --git a/crates/ra_cli/src/analysis_stats.rs b/crates/ra_cli/src/analysis_stats.rs
index 04aba374371..3429a3c49fd 100644
--- a/crates/ra_cli/src/analysis_stats.rs
+++ b/crates/ra_cli/src/analysis_stats.rs
@@ -169,12 +169,12 @@ pub fn run(
     println!(
         "Expressions of unknown type: {} ({}%)",
         num_exprs_unknown,
-        (num_exprs_unknown * 100 / num_exprs)
+        if num_exprs > 0 { (num_exprs_unknown * 100 / num_exprs) } else { 100 }
     );
     println!(
         "Expressions of partially unknown type: {} ({}%)",
         num_exprs_partially_unknown,
-        (num_exprs_partially_unknown * 100 / num_exprs)
+        if num_exprs > 0 { (num_exprs_partially_unknown * 100 / num_exprs) } else { 100 }
     );
     println!("Type mismatches: {}", num_type_mismatches);
     println!("Inference: {:?}, {}", inference_time.elapsed(), ra_prof::memory_usage());