diff --git a/systems.csv b/systems.csv
index 868a9a63..c98fd931 100644
--- a/systems.csv
+++ b/systems.csv
@@ -286,7 +286,6 @@ DE,Dott Leipzig,Leipzig,dott-leipzig,https://ridedott.com/,https://gbfs.api.ride
 DE,Dott Lindau,Lindau,dott-lindau,https://ridedott.com/,https://gbfs.api.ridedott.com/public/v2/lindau/gbfs.json,2.3,,,
 DE,Dott Lübeck,Lübeck,dott-lubeck,https://ridedott.com/,https://gbfs.api.ridedott.com/public/v2/lubeck/gbfs.json,2.3,,,
 DE,Dott Ludwigsburg,Ludwigsburg,dott-ludwigsburg,https://ridedott.com/,https://gbfs.api.ridedott.com/public/v2/ludwigsburg/gbfs.json,2.3,,,
-DE,Dott Mainz,Mainz,dott-mainz,https://ridedott.com/,https://gbfs.api.ridedott.com/public/v2/mainz/gbfs.json,2.3,,,
 DE,Dott Mannheim,Mannheim,dott-mannheim,https://ridedott.com/,https://gbfs.api.ridedott.com/public/v2/mannheim/gbfs.json,2.3,,,
 DE,Dott Minden,Minden,dott-minden,https://ridedott.com/,https://gbfs.api.ridedott.com/public/v2/minden/gbfs.json,2.3,,,
 DE,Dott Monchengladbach,Monchengladbach,dott-monchengladbach,https://ridedott.com/,https://gbfs.api.ridedott.com/public/v2/monchengladbach/gbfs.json,2.3,,,