diff --git a/gateware/rtl/base/Makefile b/gateware/rtl/base/Makefile
index ca94b41..528ea37 100644
--- a/gateware/rtl/base/Makefile
+++ b/gateware/rtl/base/Makefile
@@ -6,4 +6,4 @@ base.v: base.v.m4
 lint: base.v
 	verilator --lint-only base.v -I../spi -I../control_loop -I../waveform
 clean:
-	rm base.v
+	rm -f base.v
diff --git a/gateware/rtl/base/base.v.m4 b/gateware/rtl/base/base.v.m4
index 43ecc70..0772fb3 100644
--- a/gateware/rtl/base/base.v.m4
+++ b/gateware/rtl/base/base.v.m4
@@ -305,7 +305,6 @@ m4_dac_switch(DAC_PORTS, 7);
 
 initial test_clock <= 0;
 
-`define MAKE_TEST_CLOCK
 `ifdef MAKE_TEST_CLOCK
 reg [3-1:0] counter = 0;
 always @ (posedge clk) begin