diff --git a/SocketIO.m b/SocketIO.m
index 61ff67a..25329f1 100755
--- a/SocketIO.m
+++ b/SocketIO.m
@@ -237,7 +237,10 @@ - (void) sendEvent:(NSString *)eventName withData:(id)data andAcknowledge:(Socke
 
     // do not require arguments
     if (data != nil) {
-        [dict setObject:[NSArray arrayWithObject:data] forKey:@"args"];
+        if (![data isKindOfClass:[NSArray class]]) {
+            data = [NSArray arrayWithObject:data];
+        }
+        [dict setObject:data forKey:@"args"];
     }
     
     SocketIOPacket *packet = [[SocketIOPacket alloc] initWithType:@"event"];