diff --git a/extensions/datasource/deployment/src/main/java/io/quarkus/datasource/deployment/devservices/DevServicesDatasourceProcessor.java b/extensions/datasource/deployment/src/main/java/io/quarkus/datasource/deployment/devservices/DevServicesDatasourceProcessor.java
index 005d51faaf774..0f21c53e6e841 100644
--- a/extensions/datasource/deployment/src/main/java/io/quarkus/datasource/deployment/devservices/DevServicesDatasourceProcessor.java
+++ b/extensions/datasource/deployment/src/main/java/io/quarkus/datasource/deployment/devservices/DevServicesDatasourceProcessor.java
@@ -271,7 +271,7 @@ private DevServicesDatasourceResultBuildItem.DbResult startDevDb(String dbName,
                 propertiesMap.put(devServicesPrefix + "port", dataSourceBuildTimeConfig.devservices.port.getAsInt());
             }
             if (!dataSourceBuildTimeConfig.devservices.properties.isEmpty()) {
-                propertiesMap.put(devServicesPrefix + "port", dataSourceBuildTimeConfig.devservices.properties);
+                propertiesMap.put(devServicesPrefix + "properties", dataSourceBuildTimeConfig.devservices.properties);
             }
 
             Map<String, String> devDebProperties = new HashMap<>();