diff --git a/pipelined/regression/Makefile b/pipelined/regression/Makefile
index 0176b7ec..302ee4a9 100644
--- a/pipelined/regression/Makefile
+++ b/pipelined/regression/Makefile
@@ -5,7 +5,7 @@ make allclean:
 make clean:
 	make clean -C ../../addins/riscv-arch-test
 	make clean -C ../../tests/wally-riscv-arch-test
-	make allclean -C ../../tests/imperas-riscv-tests
+#	make allclean -C ../../tests/imperas-riscv-tests
 
 make all:
 	# *** Build old tests/imperas-riscv-tests for now;
diff --git a/pipelined/regression/makefile-memfile b/pipelined/regression/makefile-memfile
index 030cf8d5..33af1953 100644
--- a/pipelined/regression/makefile-memfile
+++ b/pipelined/regression/makefile-memfile
@@ -2,8 +2,10 @@ ROOT	:= ../..
 SUFFIX	:= work
 ARCHDIR	:= $(ROOT)/addins/riscv-arch-test
 WALLYDIR:= $(ROOT)/tests/wally-riscv-arch-test
+# IMPERASDIR	:= $(ROOT)/tests/imperas-riscv-tests
+# ALLDIRS := $(ARCHDIR)/$(SUFFIX) $(WALLYDIR)/$(SUFFIX) $(IMPERASDIR)/$(SUFFIX)
 IMPERASDIR	:= $(ROOT)/tests/imperas-riscv-tests
-ALLDIRS := $(ARCHDIR)/$(SUFFIX) $(WALLYDIR)/$(SUFFIX) $(IMPERASDIR)/$(SUFFIX)
+ALLDIRS := $(ARCHDIR)/$(SUFFIX) $(WALLYDIR)/$(SUFFIX) 
 
 ELFFILES	?= $(shell find $(ALLDIRS) -type f -regex ".*\.elf")
 MEMFILES ?= $(ELFFILES:.elf=.elf.memfile)
diff --git a/pipelined/src/fma/fma.do b/pipelined/src/fma/fma.do
index 001ae973..9a7de126 100644
--- a/pipelined/src/fma/fma.do
+++ b/pipelined/src/fma/fma.do
@@ -8,7 +8,7 @@ onbreak {resume}
 # create library
 vlib worklib
 
-vlog -lint -work worklib fma16.sv testbench.sv
+vlog -lint -work worklib fma16.sv testbench.v
 vopt +acc worklib.testbench_fma16 -work worklib -o testbenchopt
 vsim -lib worklib testbenchopt
 
diff --git a/pipelined/src/fma/testbench.sv b/pipelined/src/fma/testbench.v
similarity index 100%
rename from pipelined/src/fma/testbench.sv
rename to pipelined/src/fma/testbench.v