diff --git a/build.sh b/build.sh
index 077108eeac0b6fddb298c13f2615e447906d8f78..d27da42faac9ab6cf0f15d5344fa7f713ff907d1 100755
--- a/build.sh
+++ b/build.sh
@@ -9,11 +9,11 @@ echo "make target: $4"
 echo "compilation type: $5"
 echo "Branch name: $6"
 
-#if [ x"$3" == x"ubuntu"  ]; then
+if [ x"$3" == x"ubuntu"  ]; then
 #	rm -rf $HOME/openfpm_dependencies/openfpm_pdata/$6/*
 #	./script/install_MPI.sh $HOME/openfpm_dependencies/openfpm_pdata/$6/ 8
-#	export PATH="$HOME/openfpm_dependencies/openfpm_pdata/$6/MPI/bin/:$PATH"
-#fi
+	export PATH="$HOME/openfpm_dependencies/openfpm_pdata/$6/MPI/bin/:$PATH"
+fi
 
 #if [ x"$3" == x"osx"  ]; then
 #        rm -rf $HOME/openfpm_dependencies/openfpm_pdata/$6/OPENBLAS