diff --git a/launch-node.sh b/launch-node.sh
index d8b7fc7..51b3dc6 100755
--- a/launch-node.sh
+++ b/launch-node.sh
@@ -7,6 +7,7 @@ KEY_NAME="$1"
 KEY_PATH="$2"
 IMAGE="node"
 INSTANCE_NAME="$3"
+FLAVOR="$4"
 
 . $THISDIR/functions
 
@@ -17,7 +18,7 @@ nova delete "$INSTANCE_NAME" || true
 nova boot \
     --poll \
     --image "$IMAGE" \
-    --flavor "performance1-8" \
+    --flavor "$FLAVOR" \
     --key-name $KEY_NAME $INSTANCE_NAME
 
 IP=$(xitc-get-ip-address-of-instance $INSTANCE_NAME)
diff --git a/update-node-image.sh b/update-node-image.sh
index 8ed350c..140c635 100755
--- a/update-node-image.sh
+++ b/update-node-image.sh
@@ -10,6 +10,7 @@ KEY_NAME="$1"
 KEY_PATH="$2"
 INSTANCE_NAME="$3"
 NODE_IMAGE="node"
+FLAVOR="$4"
 
 # Use this configuration to start with a cloud image
 IMAGE="62df001e-87ee-407c-b042-6f4e13f5d7e1"
@@ -26,7 +27,7 @@ nova image-delete "$NODE_IMAGE" || true
 nova boot \
     --poll \
     --image "$IMAGE" \
-    --flavor "performance1-8" \
+    --flavor "$FLAVOR" \
     --key-name $KEY_NAME $INSTANCE_NAME
 
 IP=$(xitc-get-ip-address-of-instance $INSTANCE_NAME)