diff --git a/svgio/source/svgreader/svgstyleattributes.cxx b/svgio/source/svgreader/svgstyleattributes.cxx
index 5da9ea7c4d3c..f694d8b1cfd9 100644
--- a/svgio/source/svgreader/svgstyleattributes.cxx
+++ b/svgio/source/svgreader/svgstyleattributes.cxx
@@ -1300,7 +1300,8 @@ namespace svgio::svgreader
             maDominantBaseline(DominantBaseline::Auto),
             maResolvingParent(33, 0),
             mbStrokeDasharraySet(false),
-            mbContextStroke(false)
+            mbContextStroke(false),
+            maContextStroke(nullptr)
         {
         }