diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 8099517e2e61..36516fe86fe7 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -9669,7 +9669,7 @@ struct mlx5_ifc_pbmc_reg_bits {
 
 	struct mlx5_ifc_bufferx_reg_bits buffer[10];
 
-	u8         reserved_at_2e0[0x40];
+	u8         reserved_at_2e0[0x80];
 };
 
 struct mlx5_ifc_qtct_reg_bits {