diff --git a/intercom-plugin/src/ios/IntercomBridge.m b/intercom-plugin/src/ios/IntercomBridge.m
index 0a6c2d8..fc2f1bc 100644
--- a/intercom-plugin/src/ios/IntercomBridge.m
+++ b/intercom-plugin/src/ios/IntercomBridge.m
@@ -172,7 +172,10 @@ - (void)presentContent:(CDVInvokedUrlCommand*)command {
 }
 
 - (void)presentMessageComposer:(CDVInvokedUrlCommand*)command {
-    NSString *initialMessage = command.arguments[0];
+    NSString *initialMessage = nil;
+    if (command.arguments.count > 0 && command.arguments[0] != [NSNull null]) {
+       initialMessage = command.arguments[0];
+    }
     [Intercom presentMessageComposer:initialMessage];
     [self sendSuccess:command];
 }