diff --git a/invokeai/app/invocations/util.py b/invokeai/app/invocations/util.py
index 3ae3e17ae67..6446d387414 100644
--- a/invokeai/app/invocations/util.py
+++ b/invokeai/app/invocations/util.py
@@ -3,9 +3,13 @@
 
 def validate_weights(weights: Union[float, list[float]]) -> None:
     """Validate that all control weights in the valid range"""
-    to_validate = weights if isinstance(weights, list) else [weights]
-    if any(i < -1 or i > 2 for i in to_validate):
-        raise ValueError("Control weights must be within -1 to 2 range")
+    if isinstance(weights, list):
+        for i in weights:
+            if i < -1 or i > 2:
+                raise ValueError("Control weights must be within -1 to 2 range")
+    else:
+        if weights < -1 or weights > 2:
+            raise ValueError("Control weights must be within -1 to 2 range")
 
 
 def validate_begin_end_step(begin_step_percent: float, end_step_percent: float) -> None: