diff --git a/gen.sh b/gen.sh
index 75ae894..4657bcc 100755
--- a/gen.sh
+++ b/gen.sh
@@ -1,10 +1,13 @@
 #!/usr/bin/env bash
 
 # Init venv
-echo "Create venv" &&
 cd `dirname $0` &&
-rm -rf ./venv &&
-python3 -m venv venv &&
+(
+	if [ ! -d ./venv ]; then
+		echo "Create venv" &&
+		python3 -m venv venv
+	fi
+) &&
 source ./venv/bin/activate &&
 
 # Install updates