diff --git a/openlane/marmot/config.tcl b/openlane/marmot/config.tcl
index d1d3b59..6cd7d48 100644
--- a/openlane/marmot/config.tcl
+++ b/openlane/marmot/config.tcl
@@ -41,7 +41,7 @@
 #set ::env(SYNTH_NO_FLAT) 1
 set ::env(CLOCK_TREE_SYNTH) 1
 set ::env(DESIGN_IS_CORE) 1
-set ::env(FP_PDN_CORE_RING) 1
+set ::env(FP_PDN_CORE_RING) 0
 set ::env(STA_REPORT_POWER) 0
 set ::env(SYNTH_USE_PG_PINS_DEFINES) "USE_POWER_PINS"
 set ::env(VDD_NETS) {vccd1}