diff --git a/wally-pipelined/ppa/config/README.md b/wally-pipelined/ppa/config/README.md
deleted file mode 100644
index 62a48d5f..00000000
--- a/wally-pipelined/ppa/config/README.md
+++ /dev/null
@@ -1 +0,0 @@
-Configuration for power/performance/area experiments, per process
diff --git a/wally-pipelined/ppa/config/config.sv b/wally-pipelined/ppa/config/config.sv
new file mode 100644
index 00000000..b9f94a0e
--- /dev/null
+++ b/wally-pipelined/ppa/config/config.sv
@@ -0,0 +1 @@
+`define LIB SKY130
diff --git a/wally-pipelined/ppa/ppa.sv b/wally-pipelined/ppa/ppa.sv
index ac82fbe7..84ae7d97 100644
--- a/wally-pipelined/ppa/ppa.sv
+++ b/wally-pipelined/ppa/ppa.sv
@@ -2,9 +2,6 @@
 // Teo Ene & David_Harris@hmc.edu 25 Feb 2021
 // Measure PPA of various building blocks
 
-// replace this with the tools setting a library path to a config/skl130 directory containing config.vh
-`define LIB SKL130
-
 module top(
     input  logic       a1,
     input  logic [7:0] a8, b8,
@@ -49,7 +46,7 @@ endmodule
 
 module INVX2(input logic a, output logic y);
     generate
-        if (LIB == SKL130)
+        if (LIB == SKY130)
             sky130_osu_sc_12T_ms__inv_2 inv(a, y);
         else if (LIB == SKL90)
             scc9gena_inv_2 inv(a, y)