diff --git a/doc/scripts/gen-nodetool-docs.py b/doc/scripts/gen-nodetool-docs.py
index efb79cf7a4..d27e213b42 100644
--- a/doc/scripts/gen-nodetool-docs.py
+++ b/doc/scripts/gen-nodetool-docs.py
@@ -47,8 +47,10 @@ def batched(iterable, n):
     if n < 1:
         raise ValueError('n must be at least one')
     it = iter(iterable)
-    while (batch := tuple(islice(it, n))):
+    batch = tuple(islice(it, n))
+    while (batch):
         yield batch
+        batch = tuple(islice(it, n))
 
 # create the documentation directory
 if not os.path.exists(outdir):