diff --git a/rom/config.json b/rom/config.json
index 0ec4480..b20e51d 100644
--- a/rom/config.json
+++ b/rom/config.json
@@ -9,9 +9,6 @@
   "FP_IO_HLENGTH": 2,
   "FP_IO_VLENGTH": 2,
 
-  "//": "use alternative efabless decap cells to solve LI density issue",
-  "DECAP_CELL": "sky130_fd_sc_hd__decap_3 sky130_fd_sc_hd__decap_4 sky130_fd_sc_hd__decap_6 sky130_fd_sc_hd__decap_8 sky130_ef_sc_hd__decap_12",
-
   "//": "period is in ns, so 20ns == 50mHz",
   "CLOCK_PERIOD": 20,
   "CLOCK_PORT": "clk",