diff --git a/fuzzers/041-clk-hrow-pips/generate.py b/fuzzers/041-clk-hrow-pips/generate.py
index 30f24eed..5f1f9b61 100644
--- a/fuzzers/041-clk-hrow-pips/generate.py
+++ b/fuzzers/041-clk-hrow-pips/generate.py
@@ -2,9 +2,16 @@
 
 import os
 import os.path
+import re
 from prjxray.segmaker import Segmaker
 
 
+def src_has_active_bit(src):
+    if re.match(r"^CLK_HROW_CK_INT_[01]_[01]", src) is not None:
+        return False
+    return True
+
+
 def main():
     segmk = Segmaker("design.bits")
 
@@ -113,6 +120,9 @@ def main():
     for tile_type, srcs in clk_list.items():
         for tile, pips_srcs_dsts in tiledata.items():
             for src in srcs:
+                #Don't solve fake features
+                if not src_has_active_bit(src):
+                    continue
                 if 'GCLK' not in src:
                     active = src in active_clks[tile]
                     segmk.add_tile_tag(tile, '{}_ACTIVE'.format(src), active)