diff --git a/genStr b/genStr
index 5121513b3..08e559f61 100644
--- a/genStr
+++ b/genStr
@@ -8,4 +8,4 @@
 #
 # All rights reserved.
 
-python3 tools/genStrSession.py
+exec python3 tools/genStrSession.py
diff --git a/init/checks.sh b/init/checks.sh
index 1b15c14be..6d7d6d47f 100644
--- a/init/checks.sh
+++ b/init/checks.sh
@@ -53,6 +53,7 @@ _checkDefaultVars() {
         [UPSTREAM_REMOTE]="upstream"
         [UPSTREAM_REPO]="https://github.com/UsergeTeam/Userge"
         [LOAD_UNOFFICIAL_PLUGINS]=false
+        [ASSERT_SINGLE_INSTANCE]=false
         [CUSTOM_PLUGINS_REPO]=""
         [G_DRIVE_IS_TD]=true
         [CMD_TRIGGER]="."
@@ -83,7 +84,7 @@ except Exception as e:
     print(e)')
         [[ $herokuErr ]] && quit "heroku response > $herokuErr"
     fi
-    for var in G_DRIVE_IS_TD LOAD_UNOFFICIAL_PLUGINS; do
+    for var in G_DRIVE_IS_TD LOAD_UNOFFICIAL_PLUGINS ASSERT_SINGLE_INSTANCE; do
         eval $var=$(tr "[:upper:]" "[:lower:]" <<< ${!var})
     done
     local uNameAndPass=$(grep -oP "(?<=\/\/)(.+)(?=\@cluster)" <<< $DATABASE_URL)
diff --git a/userge/config.py b/userge/config.py
index e1a791eb2..754cdd0f7 100644
--- a/userge/config.py
+++ b/userge/config.py
@@ -66,7 +66,7 @@ class Config:
     HEROKU_APP_NAME = os.environ.get("HEROKU_APP_NAME")
     G_DRIVE_IS_TD = os.environ.get("G_DRIVE_IS_TD") == "true"
     LOAD_UNOFFICIAL_PLUGINS = os.environ.get("LOAD_UNOFFICIAL_PLUGINS") == "true"
-    ASSERT_SINGLE_INSTANCE = os.environ.get("ASSERT_SINGLE_INSTANCE", "false").lower() == "true"
+    ASSERT_SINGLE_INSTANCE = os.environ.get("ASSERT_SINGLE_INSTANCE") == "true"
     THUMB_PATH = DOWN_PATH + "thumb_image.jpg"
     TMP_PATH = "userge/plugins/temp/"
     MAX_MESSAGE_LENGTH = 4096