diff --git a/invokeai/app/invocations/latent.py b/invokeai/app/invocations/latent.py
index f4d2eecf0a..59897f5333 100644
--- a/invokeai/app/invocations/latent.py
+++ b/invokeai/app/invocations/latent.py
@@ -731,6 +731,7 @@ class DenoiseLatentsInvocation(BaseInvocation):
             return None
 
         ip_adapter_data_list = []
+        assert len(ip_adapter) == len(image_prompts)
         for single_ip_adapter in ip_adapter:
             ip_adapter_model = exit_stack.enter_context(context.models.load(single_ip_adapter.ip_adapter_model))