diff --git a/src/peft/utils/integrations.py b/src/peft/utils/integrations.py
index dc5ae465db..41ec60d6c3 100644
--- a/src/peft/utils/integrations.py
+++ b/src/peft/utils/integrations.py
@@ -88,9 +88,6 @@ def dequantize_bnb_weight(weight: torch.nn.Parameter, state=None):
     """Helper function to dequantize 4bit or 8bit bnb weights."""
     import bitsandbytes as bnb
 
-    if state.SCB is None:
-        state.SCB = weight.SCB
-
     device = weight.device
 
     cls_name = weight.__class__.__name__
@@ -98,6 +95,16 @@ def dequantize_bnb_weight(weight: torch.nn.Parameter, state=None):
         dequantized = bnb.functional.dequantize_4bit(weight.data, weight.quant_state)
         return dequantized
 
+    # 8bit case
+    if state is None:
+        raise ValueError(
+            "No `state` was passed for bnb 8bit quantized weights. Please open an issue on the PEFT repository and "
+            "report the error: https://github.com/huggingface/peft/issues"
+        )
+
+    if state.SCB is None:
+        state.SCB = weight.SCB
+
     if hasattr(bnb.functional, "int8_vectorwise_dequant"):
         # Use bitsandbytes API if available (requires v0.45.0+)
         dequantized = bnb.functional.int8_vectorwise_dequant(weight.data, state.SCB)