diff --git a/conf/.env.production b/conf/.env.production
index 121bc80..e097485 100644
--- a/conf/.env.production
+++ b/conf/.env.production
@@ -2,40 +2,40 @@
 # (can overwrite variables present in Makefile.config)
 
 # Application
-export FLASK_APP=fittrackee
-export FLASK_SKIP_DOTENV=1
-# export HOST=
-export PORT=__PORT__
-# export APP_SETTINGS=fittrackee.config.ProductionConfig
-export APP_SECRET_KEY='__KEY__'
-# export APP_WORKERS=
-export APP_LOG=/var/log/__APP__/__APP__.log
-export UPLOAD_FOLDER=/home/yunohost.app/__APP__/data
+FLASK_APP=fittrackee
+FLASK_SKIP_DOTENV=1
+# HOST=
+PORT=__PORT__
+# APP_SETTINGS=fittrackee.config.ProductionConfig
+APP_SECRET_KEY='__KEY__'
+# APP_WORKERS=
+APP_LOG=/var/log/__APP__/__APP__.log
+UPLOAD_FOLDER=/home/yunohost.app/__APP__/data
 
 # PostgreSQL
-export DATABASE_URL=postgresql://__DB_USER__:__DB_PWD__@:5432/__DB_NAME__
-# export DATABASE_DISABLE_POOLING=
+DATABASE_URL=postgresql://__DB_USER__:__DB_PWD__@:5432/__DB_NAME__
+# DATABASE_DISABLE_POOLING=
 
 # Redis (required for API rate limits and email sending)
-export REDIS_URL=redis://
+REDIS_URL=redis://
 
 # API rate limits
-# export API_RATE_LIMITS="300 per 5 minutes"
+# API_RATE_LIMITS="300 per 5 minutes"
 
 # Emails
-export UI_URL=__DOMAIN__
-export EMAIL_URL=__ADMIN_MAIL__
-export SENDER_EMAIL=__ADMIN_MAIL__
-# export WORKERS_PROCESSES=
+UI_URL=__DOMAIN__
+EMAIL_URL=__ADMIN_MAIL__
+SENDER_EMAIL=__ADMIN_MAIL__
+# WORKERS_PROCESSES=
 
 # Workouts
-# export TILE_SERVER_URL=
-# export STATICMAP_SUBDOMAINS=
-# export MAP_ATTRIBUTION=
-# export DEFAULT_STATICMAP=False
+# TILE_SERVER_URL=
+# STATICMAP_SUBDOMAINS=
+# MAP_ATTRIBUTION=
+# DEFAULT_STATICMAP=False
 
 # Weather
 # available weather API providers: darksky, visualcrossing
-# export WEATHER_API_PROVIDER=visualcrossing 
-# export WEATHER_API_KEY=
+# WEATHER_API_PROVIDER=visualcrossing 
+# WEATHER_API_KEY=
 
diff --git a/conf/fittrackee.service b/conf/fittrackee.service
index 835f6cf..f0e0d0a 100644
--- a/conf/fittrackee.service
+++ b/conf/fittrackee.service
@@ -12,11 +12,20 @@ Restart=always
 RestartSec=1
 User=__APP__
 Group=__APP__
-StandardOutput=syslog
 StandardError=syslog
-SyslogIdentifier=fittrackee
 SyslogIdentifier=__APP__
-EnvironmentFile=/etc/systemd/system/__APP__.service.d/variables.conf
+Environment="APP_SECRET_KEY="
+Environment="APP_LOG="
+Environment="UPLOAD_FOLDER="
+Environment="DATABASE_URL="
+Environment="UI_URL="
+Environment="EMAIL_URL="
+Environment="SENDER_EMAIL="
+Environment="REDIS_URL="
+Environment="TILE_SERVER_URL="
+Environment="STATICMAP_SUBDOMAINS="
+Environment="MAP_ATTRIBUTION="
+Environment="WEATHER_API_KEY="
 WorkingDirectory=__INSTALL_DIR__/
 ExecStart=__INSTALL_DIR__/.venv/bin/gunicorn -b 127.0.0.1:__PORT__ "fittrackee:create_app()" --error-logfile /var/log/__APP__/__APP__.log
 Restart=always
diff --git a/conf/fittrackee_workers.service b/conf/fittrackee_workers.service
index b4305eb..0e3c271 100644
--- a/conf/fittrackee_workers.service
+++ b/conf/fittrackee_workers.service
@@ -12,10 +12,17 @@ Restart=always
 RestartSec=1
 User=__APP__
 Group=__APP__
-StandardOutput=syslog
 StandardError=syslog
 SyslogIdentifier=__APP___workers
-EnvironmentFile=/etc/systemd/system/__APP___workers.service.d/variables.conf
+Environment="FLASK_APP=fittrackee"
+Environment="APP_SECRET_KEY="
+Environment="APP_LOG="
+Environment="UPLOAD_FOLDER="
+Environment="DATABASE_URL="
+Environment="UI_URL="
+Environment="EMAIL_URL="
+Environment="SENDER_EMAIL="
+Environment="REDIS_URL="
 WorkingDirectory=__INSTALL_DIR__/
 ExecStart=__INSTALL_DIR__/.venv/bin/flask worker --processes 2
 Restart=always
diff --git a/scripts/install b/scripts/install
index 7cf8c48..c4ed3c5 100755
--- a/scripts/install
+++ b/scripts/install
@@ -98,24 +98,6 @@ ynh_script_progression --message="Configuring a systemd service..." --weight=1
 ynh_add_systemd_config --service="${app}" --template="${app}.service"
 ynh_add_systemd_config --service="${app}_workers" --template="${app}_workers.service"
 
-
-mkdir /etc/systemd/system/${app}.service.d/
-chown $app: /etc/systemd/system/${app}.service.d/
-
-ynh_add_config --template="../conf/variables_fittrackee_workers.conf" --destination="/etc/systemd/system/${app}.service.d/variables.conf"
-chmod 600 /etc/systemd/system/${app}.service.d/variables.conf
-chown $app: "/etc/systemd/system/${app}.service.d/variables.conf"
-
-mkdir /etc/systemd/system/${app}_workers.service.d/
-chown $app: /etc/systemd/system/${app}_workers.service.d/
-
-ynh_add_config --template="../conf/variables_fittrackee_workers.conf" --destination="/etc/systemd/system/${app}_workers.service.d/variables.conf"
-chmod 600 /etc/systemd/system/${app}_workers.service.d/variables.conf
-chown $app: "/etc/systemd/system/${app}_workers.service.d/variables.conf"
-
-
-systemctl daemon-reload
-
 #=================================================
 # GENERIC FINALIZATION
 #=================================================