diff --git a/crates/pptx/src/write/shapes.rs b/crates/pptx/src/write/shapes.rs
index 2140211c7..80eabbcf2 100644
--- a/crates/pptx/src/write/shapes.rs
+++ b/crates/pptx/src/write/shapes.rs
@@ -343,7 +343,9 @@ pub fn shape(w: &mut W, x: &mut Exp, o: &mut Out, cx: &mut Ctx, s: &Shape, depth
                 {
                     dml::effects(w, fx);
                 }
-                if let Some(raw) = fx.raw3d.as_deref().and_then(|s| dml::valid_raw3d(s, &["scene3d"])) {
+                if let Some(raw) =
+                    fx.raw3d.as_deref().map(|s| s.find("<a:sp3d").map_or(s, |i| &s[..i])).and_then(|s| dml::valid_raw3d(s, &["scene3d"]))
+                {
                     w.raw(raw);
                 }
             }