diff --git a/tvix/eval/src/compiler.rs b/tvix/eval/src/compiler.rs
index 6bb75f92c..4b7a7b44a 100644
--- a/tvix/eval/src/compiler.rs
+++ b/tvix/eval/src/compiler.rs
@@ -568,7 +568,7 @@ impl Compiler {
                 self.compile_with_literal_ident(next)?;
 
                 for fragment in fragments.into_iter().rev() {
-                    self.chunk.push_op(OpCode::OpAttrsSelect);
+                    self.chunk.push_op(OpCode::OpAttrOrNotFound);
                     self.compile_with_literal_ident(fragment)?;
                 }
 
diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-contains-nested-non-set.exp b/tvix/eval/src/tests/tvix_tests/eval-okay-contains-nested-non-set.exp
new file mode 100644
index 000000000..c508d5366
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-contains-nested-non-set.exp
@@ -0,0 +1 @@
+false
diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-contains-nested-non-set.nix b/tvix/eval/src/tests/tvix_tests/eval-okay-contains-nested-non-set.nix
new file mode 100644
index 000000000..361ba9144
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-contains-nested-non-set.nix
@@ -0,0 +1,3 @@
+# ? operator should work even if encountering a non-set value on the
+# walk
+{ a.b = 42; } ? a.b.c