diff --git a/arrow-data/src/ffi.rs b/arrow-data/src/ffi.rs
index 04599bc47a1c..3b446ef255fe 100644
--- a/arrow-data/src/ffi.rs
+++ b/arrow-data/src/ffi.rs
@@ -289,7 +289,7 @@ impl FFI_ArrowArray {
     /// Returns the buffer at the provided index
     ///
     /// # Panic
-    /// Panics if index exceeds the number of buffers or the buffer is not correctly aligned
+    /// Panics if index >= self.num_buffers() or the buffer is not correctly aligned
     #[inline]
     pub fn buffer(&self, index: usize) -> *const u8 {
         assert!(!self.buffers.is_null());