diff --git a/libs/langchain/langchain/document_loaders/geodataframe.py b/libs/langchain/langchain/document_loaders/geodataframe.py
index cd988b7c677..afb03ea1044 100644
--- a/libs/langchain/langchain/document_loaders/geodataframe.py
+++ b/libs/langchain/langchain/document_loaders/geodataframe.py
@@ -35,7 +35,7 @@ class GeoDataFrameLoader(BaseLoader):
                 f"Expected data_frame to have a column named {page_content_column}"
             )
 
-        if not isinstance(data_frame[page_content_column].iloc[0], gpd.GeoSeries):
+        if not isinstance(data_frame[page_content_column], gpd.GeoSeries):
             raise ValueError(
                 f"Expected data_frame[{page_content_column}] to be a GeoSeries"
             )