diff --git a/mk.sh b/mk.sh
index 1f27f92..d61468c 100755
--- a/mk.sh
+++ b/mk.sh
@@ -5,4 +5,8 @@ if [ ! -d "build" ]; then
   mkdir build && cd build && cmake ../libdtn && cd .. || (echo cargo:error="CMAKE BUILD FAILED" && cd .. && rmdir build)
 fi
 
-cd build && make -j 24 && cd .. && cargo build || echo cargo:error="MAKE FAILED"
+if [ -z $1 ]; then
+  cd build && make -j 24 && cd .. && cargo build || echo cargo:error="MAKE FAILED"
+else 
+  cd build && make -j 24 && cd .. || echo cargo:error="MAKE FAILED"
+fi