diff --git a/Makefile b/Makefile
index b78015d28..3cf179941 100644
--- a/Makefile
+++ b/Makefile
@@ -158,7 +158,7 @@ build-moore:
 
 # build the RISC-V tests
 build-tests:
-	cd riscv-tests && autoconf && ./configure --prefix=/home/zarubaf/riscv && make -j8
+	cd riscv-tests && autoconf && ./configure --prefix=/home/zarubaf/riscv && make isa -j8
 
 # User Verilator to lint the target
 lint:
@@ -171,4 +171,4 @@ clean:
 .PHONY:
 	build lint build-moore
 
-	# make CC=/usr/pack/modelsim-10.6-kgf/questasim/gcc-5.3.0-linux_x86_64/bin/gcc CXX=/usr/pack/modelsim-10.6-kgf/questasim/gcc-5.3.0-linux_x86_64/bin/g++ -j20
\ No newline at end of file
+	# make CC=/usr/pack/modelsim-10.6-kgf/questasim/gcc-5.3.0-linux_x86_64/bin/gcc CXX=/usr/pack/modelsim-10.6-kgf/questasim/gcc-5.3.0-linux_x86_64/bin/g++ -j20