diff --git a/modules/precision_generator/subs.py b/modules/precision_generator/subs.py
index 46146eea7836aff8be0af6e9fa40735fefe86223..7b3c8ee3ec927a50aa0bbb5eb7517ee476560e32 100644
--- a/modules/precision_generator/subs.py
+++ b/modules/precision_generator/subs.py
@@ -399,6 +399,7 @@ subs = {
     ('', 'csc_s',          'csc_d',          'csc_c',          'csc_z'           ),
     ('', 'sequential_s',   'sequential_d',   'sequential_c',   'sequential_z'    ),
     ('', 'coeftab_s',      'coeftab_d',      'coeftab_c',      'coeftab_z'       ),
+    ('', 'cblk_s',         'cblk_d',         'cblk_c',         'cblk_z'          ),
     ('', 'thread_s',       'thread_d',       'thread_c',       'thread_z'        ),
     ('', 'thread_ps',      'thread_pd',      'thread_pc',      'thread_pz'       ),