diff --git a/types/bpmn-moddle/index.d.ts b/types/bpmn-moddle/index.d.ts
index 43a6431308..1a29f5c3ef 100644
--- a/types/bpmn-moddle/index.d.ts
+++ b/types/bpmn-moddle/index.d.ts
@@ -276,14 +276,14 @@ declare namespace BPMNModdle {
         source: LinkEventDefinition;
     }
     interface MessageEventDefinition extends EventDefinition {
-        nessageRef: Message;
+        messageRef: Message;
         operationRef: Operation;
     }
     interface ConditionalEventDefinition extends EventDefinition {
         condition: Expression;
     }
     interface SignalEventDefinition extends EventDefinition {
-        singalRef: Signal;
+        signalRef: Signal;
     }
     interface Signal extends RootElement {
         structureRef: ItemDefinition;