diff --git a/clients/python/text_generation/types.py b/clients/python/text_generation/types.py
index aa02d8d8..6a3652a4 100644
--- a/clients/python/text_generation/types.py
+++ b/clients/python/text_generation/types.py
@@ -87,8 +87,8 @@ class Parameters(BaseModel):
 
     @validator("top_p")
     def valid_top_p(cls, v):
-        if v is not None and (v <= 0 or v >= 1.0):
-            raise ValidationError("`top_p` must be > 0.0 and < 1.0")
+        if v is not None and (v <= 0 or v > 1.0):
+            raise ValidationError("`top_p` must be > 0.0 and <= 1.0")
         return v
 
     @validator("truncate")