diff --git a/litex/build/colognechip/colognechip.py b/litex/build/colognechip/colognechip.py
index 2de8b7a6e..ecbf59709 100644
--- a/litex/build/colognechip/colognechip.py
+++ b/litex/build/colognechip/colognechip.py
@@ -114,7 +114,7 @@ class CologneChipToolchain(GenericToolchain):
         # yosys call
         script_contents += self._yosys.get_yosys_call("script") + fail_stmt
         # p_r call
-        script_contents += "p_r -ccf {build_name}.ccf -A 1 -i {build_name}_synth.v -o {build_name} -lib ccag\n".format(
+        script_contents += "p_r -ccf {build_name}.ccf -cCP -A 1 -i {build_name}_synth.v -o {build_name} -lib ccag\n".format(
             build_name = self._build_name)
 
         script_file = "build_" + self._build_name + script_ext