diff --git a/mvapich2_install.sh b/mvapich2_install.sh
index 78f24e8..a079ec7 100755
--- a/mvapich2_install.sh
+++ b/mvapich2_install.sh
@@ -22,7 +22,7 @@ COMPILER_VERSION=${COMPILER_VERSION:=}
 # package to build
 CATEGORY="mpi"
 PACKAGE="mvapich2"
-VERSION="1.6rc2"
+VERSION="1.6rc3"
 
 # add a descriptor at the end of the installation path e.g. for special config options etc.
 PACKAGE_DESCRIPTOR=${PACKAGE_DESCRIPTOR:+-$PACKAGE_DESCRIPTOR}
@@ -39,7 +39,7 @@ P=${PACKAGE}-${VERSION}
 #--enable-sharedlibs=gcc \
 CONFIGURE_OPTS="\
 		"
-MAKEOPTS="-j2"
+MAKEOPTS="-j1"
 
 
 # Compiler specifications