diff --git a/backends/concrete-cpu/test/Makefile b/backends/concrete-cpu/test/Makefile
index 727a95916..77d79ccf8 100644
--- a/backends/concrete-cpu/test/Makefile
+++ b/backends/concrete-cpu/test/Makefile
@@ -1,19 +1,21 @@
+ROOT_DIR=$(realpath $(PWD)/..)
+
 regenererate_lib:
-	rm -rf ../include/concrete-cpu.h
+	# rm -rf ../include/concrete-cpu.h
 	cargo build
 
 test_encryption: regenererate_lib
-	zig test test_encryption.zig -I.. -lc -lconcrete_cpu -lunwind -L../target/debug/
+	zig test test_encryption.zig -I$(ROOT_DIR) -lc -lconcrete_cpu -lunwind -L../target/debug/
 
 
 test_bootstrap: regenererate_lib
-	zig test test_bootstrap.zig -I.. -lc -lconcrete_cpu -lunwind -L../target/debug/
+	zig test test_bootstrap.zig -I$(ROOT_DIR) -lc -lconcrete_cpu -lunwind -L../target/debug/
 
 test_vertical_packing: regenererate_lib
-	zig test test_vertical_packing.zig -I.. -lc -lconcrete_cpu -lunwind -L../target/debug/
+	zig test test_vertical_packing.zig -I$(ROOT_DIR) -lc -lconcrete_cpu -lunwind -L../target/debug/
 
 
 test_bit_extract: regenererate_lib
-	zig test test_bit_extract.zig -I.. -lc -lconcrete_cpu -lunwind -L../target/debug/
+	zig test test_bit_extract.zig -I$(ROOT_DIR) -lc -lconcrete_cpu -lunwind -L../target/debug/
 
 test: test_encryption test_bootstrap test_bit_extract test_vertical_packing