diff --git a/cpp/src/arrow/filesystem/azurefs.cc b/cpp/src/arrow/filesystem/azurefs.cc
index bc341b9cb1d1e..2e4dd6684d7b3 100644
--- a/cpp/src/arrow/filesystem/azurefs.cc
+++ b/cpp/src/arrow/filesystem/azurefs.cc
@@ -646,10 +646,10 @@ class ObjectAppendStream final : public io::OutputStream {
     const auto required_padding_digits =
         target_number_of_digits - std::min(target_number_of_digits, new_block_id.size());
     new_block_id.insert(0, required_padding_digits, '0');
-    // There is a small risk when appending to a blob created by another client that 
-    // `new_block_id` may overlapping with an existing block id. Adding the `-arrow` 
-    // suffix significantly reduces the risk, but does not 100% eliminate it. For example 
-    // if the blob was previously created with one block, with id `00001-arrow` then the 
+    // There is a small risk when appending to a blob created by another client that
+    // `new_block_id` may overlapping with an existing block id. Adding the `-arrow`
+    // suffix significantly reduces the risk, but does not 100% eliminate it. For example
+    // if the blob was previously created with one block, with id `00001-arrow` then the
     // next block we append will conflict with that, and cause corruption.
     new_block_id += "-arrow";
     new_block_id = Azure::Core::Convert::Base64Encode(