diff --git a/packaging/conf/sql_exporter.default b/packaging/conf/sql_exporter.default
index 083d83c2..3ad152fd 100644
--- a/packaging/conf/sql_exporter.default
+++ b/packaging/conf/sql_exporter.default
@@ -1,6 +1,6 @@
 CONF_FILE=/etc/sql_exporter/sql_exporter.yml
 LISTEN_ADDRESS=0.0.0.0:9399
-LOG_JSON=false
+LOG_FORMAT=logfmt
 LOG_LEVEL=debug
 ENABLE_RELOAD=false
 METRICS_PATH=/metrics
diff --git a/packaging/deb/sql_exporter.service b/packaging/deb/sql_exporter.service
index cc052630..ae9e4fb0 100644
--- a/packaging/deb/sql_exporter.service
+++ b/packaging/deb/sql_exporter.service
@@ -13,7 +13,7 @@ Restart=on-failure
 WorkingDirectory=/usr/share/sql_exporter
 RuntimeDirectory=sql_exporter
 RuntimeDirectoryMode=0750
-ExecStart=/usr/bin/sql_exporter -config.file=${CONF_FILE} -web.listen-address=${LISTEN_ADDRESS} -log.json=${LOG_JSON} -log.level=${LOG_LEVEL} -web.enable-reload=${ENABLE_RELOAD} -web.metrics-path=${METRICS_PATH} -web.config.file=${WEB_CONFIG_FILE}
+ExecStart=/usr/bin/sql_exporter -config.file=${CONF_FILE} -web.listen-address=${LISTEN_ADDRESS} -log.format=${LOG_FORMAT} -log.level=${LOG_LEVEL} -web.enable-reload=${ENABLE_RELOAD} -web.metrics-path=${METRICS_PATH} -web.config.file=${WEB_CONFIG_FILE}
 LimitNOFILE=10000
 TimeoutStopSec=20
 CapabilityBoundingSet=
diff --git a/packaging/rpm/sql_exporter.service b/packaging/rpm/sql_exporter.service
index 5956ac06..a92ca58a 100644
--- a/packaging/rpm/sql_exporter.service
+++ b/packaging/rpm/sql_exporter.service
@@ -13,7 +13,7 @@ Restart=on-failure
 WorkingDirectory=/usr/share/sql_exporter
 RuntimeDirectory=sql_exporter
 RuntimeDirectoryMode=0750
-ExecStart=/usr/bin/sql_exporter -config.file=${CONF_FILE} -web.listen-address=${LISTEN_ADDRESS} -log.json=${LOG_JSON} -log.level=${LOG_LEVEL} -web.enable-reload=${ENABLE_RELOAD} -web.metrics-path=${METRICS_PATH} -web.config.file=${WEB_CONFIG_FILE}
+ExecStart=/usr/bin/sql_exporter -config.file=${CONF_FILE} -web.listen-address=${LISTEN_ADDRESS} -log.format=${LOG_FORMAT} -log.level=${LOG_LEVEL} -web.enable-reload=${ENABLE_RELOAD} -web.metrics-path=${METRICS_PATH} -web.config.file=${WEB_CONFIG_FILE}
 LimitNOFILE=10000
 TimeoutStopSec=20
 CapabilityBoundingSet=