diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8b20ab4..ec5b5dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+* Fix Python exception about PDF rasterized
+
 ## 3.4.0 - 2024-05-27
 
 * Bump QGIS minimum version to QGIS 3.22
diff --git a/atlasprint/core.py b/atlasprint/core.py
index 6993e9f..f782186 100755
--- a/atlasprint/core.py
+++ b/atlasprint/core.py
@@ -22,6 +22,7 @@
 from qgis.gui import QgsLayerTreeMapCanvasBridge, QgsMapCanvas
 
 from .logger import Logger
+from .tools import to_bool
 
 __copyright__ = 'Copyright 2021, 3Liz'
 __license__ = 'GPL version 3'
@@ -217,7 +218,7 @@ def print_layout(
         # Default to PDF
         # PDF settings
         if atlas_layout:
-            settings.rasterizeWholeImage = atlas_layout.customProperty("rasterize", False)
+            settings.rasterizeWholeImage = to_bool(atlas_layout.customProperty("rasterize", False), default_value=False)
         # Export
         result, error = QgsLayoutExporter.exportToPdf(atlas or report_layout, str(export_path), settings)
         # Let's override error message