diff --git a/sky130/openlane/config.tcl b/sky130/openlane/config.tcl
index 444cd40..d61d1bb 100755
--- a/sky130/openlane/config.tcl
+++ b/sky130/openlane/config.tcl
@@ -132,7 +132,7 @@
     via4 0.00580E-3"
 
 # Layer RC Values
-set ::env(LAYERS_RC)"\
+set ::env(LAYERS_RC) "\
 	li1 1.499e-04 7.176e-02,\
 	met1 1.449e-04 8.929e-04,\
 	met2 1.331e-04 8.929e-04,\