diff --git a/docs/README.rst b/docs/README.rst
index 31b3911f..4aadedca 100644
--- a/docs/README.rst
+++ b/docs/README.rst
@@ -66,7 +66,7 @@ Command line options
     -d, --dbname=                               PostgreSQL database name (default: timetable) [$PGTT_PGDATABASE]
     -u, --user=                                 PostgreSQL user (default: scheduler) [$PGTT_PGUSER]
         --password=                             PostgreSQL user password [$PGTT_PGPASSWORD]
-        --sslmode=[disable|require]             What SSL priority use for connection (default: disable)
+        --sslmode=[disable|require]             What SSL mode to use for connection (default: disable) [$PGTT_PGSSLMODE]
         --pgurl=                                PostgreSQL connection URL [$PGTT_URL]
         --timeout=                              PostgreSQL connection timeout in seconds (default: 90) [$PGTT_TIMEOUT]
 
diff --git a/internal/config/cmdparser.go b/internal/config/cmdparser.go
index 68d9c743..9a19586d 100644
--- a/internal/config/cmdparser.go
+++ b/internal/config/cmdparser.go
@@ -14,7 +14,7 @@ type ConnectionOpts struct {
 	DBName   string `short:"d" long:"dbname" description:"PostgreSQL database name" default:"timetable" env:"PGTT_PGDATABASE"`
 	User     string `short:"u" long:"user" description:"PostgreSQL user" default:"scheduler" env:"PGTT_PGUSER"`
 	Password string `long:"password" description:"PostgreSQL user password" env:"PGTT_PGPASSWORD"`
-	SSLMode  string `long:"sslmode" default:"disable" description:"What SSL priority use for connection" choice:"disable" choice:"require"`
+	SSLMode  string `long:"sslmode" default:"disable" description:"What SSL mode to use for connection" env:"PGTT_PGSSLMODE" choice:"disable" choice:"require"`
 	PgURL    string `long:"pgurl" description:"PostgreSQL connection URL" env:"PGTT_URL"`
 	Timeout  int    `long:"timeout" description:"PostgreSQL connection timeout" env:"PGTT_TIMEOUT" default:"90"`
 }