diff --git a/integrations/pinecone/src/haystack_integrations/document_stores/pinecone/document_store.py b/integrations/pinecone/src/haystack_integrations/document_stores/pinecone/document_store.py
index a755b7e47..92ea987b4 100644
--- a/integrations/pinecone/src/haystack_integrations/document_stores/pinecone/document_store.py
+++ b/integrations/pinecone/src/haystack_integrations/document_stores/pinecone/document_store.py
@@ -85,7 +85,7 @@ def __init__(
             )
         self.dimension = actual_dimension or dimension
 
-        self._dummy_vector = [0.0] * self.dimension
+        self._dummy_vector = [-10.0] * self.dimension
         self.environment = environment
         self.index = index
         self.namespace = namespace