diff --git a/xarray/coding/cftimeindex.py b/xarray/coding/cftimeindex.py
index 6898809e3b0..ded4c88fb80 100644
--- a/xarray/coding/cftimeindex.py
+++ b/xarray/coding/cftimeindex.py
@@ -270,16 +270,12 @@ def format_times(
 
 def format_attrs(index, separator=", "):
     """Format attributes of CFTimeIndex for __repr__."""
-    attrs = {
-        "dtype": f"'{index.dtype}'",
-        "length": f"{len(index)}",
-        "calendar": f"{index.calendar!r}",
-        "freq": f"{index.freq!r}",
-    }
-
-    attrs_str = [f"{k}={v}" for k, v in attrs.items()]
-    attrs_str = f"{separator}".join(attrs_str)
-    return attrs_str
+    return (
+        f"dtype='{index.dtype}'{separator}"
+        f"length={len(index)}{separator}"
+        f"calendar={index.calendar!r}{separator}"
+        f"freq={index.freq!r}"
+    )
 
 
 class CFTimeIndex(pd.Index):