diff --git a/cmake.sh b/cmake.sh
index 30b1397..ef5a47a 100755
--- a/cmake.sh
+++ b/cmake.sh
@@ -199,11 +199,11 @@ fi
 if [ -x "$(command -v parallel)" ]; then
 	PV=$(parallel --version | head -n 1 | awk '{ print $3; }')
 	if [ "$PV" -lt "20131121" ]; then
-		parallel generate_configuration ::: "${BUILD_TYPES[@]}"
+		parallel -r generate_configuration ::: "${BUILD_TYPES[@]}"
 	elif [ "$PV" -lt "20141023" ]; then
-		parallel --no-notice generate_configuration ::: "${BUILD_TYPES[@]}"
+		parallel -r --no-notice generate_configuration ::: "${BUILD_TYPES[@]}"
 	else
-		parallel --will-cite generate_configuration ::: "${BUILD_TYPES[@]}"
+		parallel -r --will-cite generate_configuration ::: "${BUILD_TYPES[@]}"
 	fi
 else
 	for T in "${BUILD_TYPES[@]}"; do generate_configuration "${T}"; done