diff --git a/src/pdf/CMakeLists.txt b/src/pdf/CMakeLists.txt
index 61806ee08..00621491e 100644
--- a/src/pdf/CMakeLists.txt
+++ b/src/pdf/CMakeLists.txt
@@ -205,6 +205,7 @@ foreach(arch ${archs})
         )
         extend_gn_list(gnArgArg
             ARGS pdfium_use_system_libpng use_system_libpng
+                 skia_use_system_libpng
             CONDITION QT_FEATURE_webengine_system_libpng
         )
         extend_gn_list(gnArgArg