diff --git a/fuzzers/040-clk-hrow-config/generate.py b/fuzzers/040-clk-hrow-config/generate.py
index 1fe04bcf..8fc7d1ee 100644
--- a/fuzzers/040-clk-hrow-config/generate.py
+++ b/fuzzers/040-clk-hrow-config/generate.py
@@ -24,6 +24,9 @@ def main():
         segmk.add_site_tag(
             row['site'], '{}.INIT_OUT'.format(base_name), row['INIT_OUT'])
 
+        segmk.add_site_tag(
+            row['site'], '{}.ZINV_CE'.format(base_name), 1 ^ row['IS_CE_INVERTED'])
+
         # SYNC is a zero pattern
         for opt in ['ASYNC']:
             segmk.add_site_tag(
diff --git a/fuzzers/040-clk-hrow-config/top.py b/fuzzers/040-clk-hrow-config/top.py
index 9b3d329e..8979f096 100644
--- a/fuzzers/040-clk-hrow-config/top.py
+++ b/fuzzers/040-clk-hrow-config/top.py
@@ -57,13 +57,14 @@ module top();
                 params['INIT_OUT'] = random.randint(0, 1)
                 params['CE_TYPE'] = verilog.quote(
                     random.choice(('SYNC', 'ASYNC')))
-
+                params['IS_CE_INVERTED'] = random.randint(0, 1)
                 print(
                     '''
     (* KEEP, DONT_TOUCH, LOC = "{site}" *)
     BUFHCE #(
         .INIT_OUT({INIT_OUT}),
-        .CE_TYPE({CE_TYPE})
+        .CE_TYPE({CE_TYPE}),
+        .IS_CE_INVERTED({IS_CE_INVERTED})
         ) buf_{site} ();
                     '''.format(**params))