diff --git a/lib/radio/cordic/ghdl/.gitignore.templ b/lib/radio/cordic/ghdl/.gitignore.templ
new file mode 100644
index 0000000..907336a
--- /dev/null
+++ b/lib/radio/cordic/ghdl/.gitignore.templ
@@ -0,0 +1,4 @@
+.gitignore
+build/
+.gitignore
+build/
diff --git a/lib/radio/cordic/ghdl/tb_cordic_iterative_top.make b/lib/radio/cordic/ghdl/tb_cordic_iterative_top.make
index 6a51c30..76096a3 100644
--- a/lib/radio/cordic/ghdl/tb_cordic_iterative_top.make
+++ b/lib/radio/cordic/ghdl/tb_cordic_iterative_top.make
@@ -22,6 +22,7 @@ SRCS += $(LIB_PATH)/radio/cordic/src/tb_cordic_top.vhd
 TARGET := tb_cordic_iterative_top
 ENTITY := tb_cordic_top
 RUN_TIME := 300us
+WAVE_FORMAT := vcd
 
 GHDL_OPTS := -P$(LIB_PATH)/fixed/ieee_proposed/build/fixed_pkg/ieee_proposed
 
diff --git a/lib/radio/cordic/ghdl/tb_cordic_pipe_top.make b/lib/radio/cordic/ghdl/tb_cordic_pipe_top.make
index f62b4bb..dda9465 100644
--- a/lib/radio/cordic/ghdl/tb_cordic_pipe_top.make
+++ b/lib/radio/cordic/ghdl/tb_cordic_pipe_top.make
@@ -22,6 +22,7 @@ SRCS += $(LIB_PATH)/radio/cordic/src/tb_cordic_pipe_top.vhd
 TARGET := tb_cordic_pipe_top
 ENTITY := tb_cordic_pipe_top
 RUN_TIME := 150us
+WAVE_FORMAT := vcd
 
 GHDL_OPTS := -P$(LIB_PATH)/fixed/ieee_proposed/build/fixed_pkg/ieee_proposed