diff --git a/fvcore/nn/print_model_statistics.py b/fvcore/nn/print_model_statistics.py
index d4657e9..bc029d5 100644
--- a/fvcore/nn/print_model_statistics.py
+++ b/fvcore/nn/print_model_statistics.py
@@ -49,7 +49,7 @@ def fmt(x: float) -> str:
         return fmt(x / 1e6) + "M"
     if abs(x) > 1e2:
         return fmt(x / 1e3) + "K"
-    return str(x)
+    return fmt(x)
 
 
 def _pretty_statistics(