diff --git a/sky130/librelane/sky130_fd_sc_hd/config.tcl b/sky130/librelane/sky130_fd_sc_hd/config.tcl
index af0ae5d..c1f1343 100755
--- a/sky130/librelane/sky130_fd_sc_hd/config.tcl
+++ b/sky130/librelane/sky130_fd_sc_hd/config.tcl
@@ -29,7 +29,7 @@
 set ::env(CTS_ROOT_BUFFER) "$::env(STD_CELL_LIBRARY)__clkbuf_16"
 
 # fill/decap cell insertion
-set ::env(FILL_CELLS) "$::env(STD_CELL_LIBRARY)__fill_2 $::env(STD_CELL_LIBRARY)__fill_1"
+set ::env(FILL_CELLS) "$::env(STD_CELL_LIBRARY)__fill*"
 set ::env(DECAP_CELLS) "$::env(STD_CELL_LIBRARY)__decap_3"
 
 # diode insertion