diff --git a/src/ios/Plugins/JPushPlugin.m b/src/ios/Plugins/JPushPlugin.m
index 7c0ae35..64d3791 100644
--- a/src/ios/Plugins/JPushPlugin.m
+++ b/src/ios/Plugins/JPushPlugin.m
@@ -103,6 +103,10 @@
     return;
   }
   
+  if (!_jpushEventCache) {
+    _jpushEventCache = @{}.mutableCopy;
+  }
+  
   if (!_jpushEventCache[eventName]) {
     _jpushEventCache[eventName] = @[].mutableCopy;
   }