diff --git a/src/SOL003/definitions/SOL003_def.yaml b/src/SOL003/definitions/SOL003_def.yaml
index 5e1cc0197ae58578b3632f41c63f83339c03153f..06d4c1d1fdfe618ba8669f6f942b7e153b5c6f40 100644
--- a/src/SOL003/definitions/SOL003_def.yaml
+++ b/src/SOL003/definitions/SOL003_def.yaml
@@ -79,7 +79,7 @@ definitions:
       isRootCause:
         description: >
           Attribute indicating if this fault is the root for other correlated
-          alarms. If TRUE, then the alarms listed in the attribute
+          alarms. If true, then the alarms listed in the attribute
           CorrelatedAlarmId are caused by this fault.
         type: boolean
       correlatedAlarmIds: