diff --git a/test_suite/tests/compile-fail/conflict/flatten-skip-deserializing.rs b/test_suite/tests/compile-fail/conflict/flatten-skip-deserializing.rs
new file mode 100644
index 00000000..3ef4d38f
--- /dev/null
+++ b/test_suite/tests/compile-fail/conflict/flatten-skip-deserializing.rs
@@ -0,0 +1,24 @@
+// Copyright 2018 Serde Developers
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#[macro_use]
+extern crate serde_derive;
+
+#[derive(Deserialize)] //~ ERROR: proc-macro derive panicked
+//~^ HELP: #[serde(flatten] can not be combined with #[serde(skip_deserializing)]
+struct Foo {
+    #[serde(flatten, skip_deserializing)]
+    other: Other,
+}
+
+#[derive(Deserialize)]
+struct Other {
+    x: u32
+}
+
+fn main() {}
diff --git a/test_suite/tests/compile-fail/conflict/flatten-skip-serializing-if.rs b/test_suite/tests/compile-fail/conflict/flatten-skip-serializing-if.rs
new file mode 100644
index 00000000..6a5fa9d6
--- /dev/null
+++ b/test_suite/tests/compile-fail/conflict/flatten-skip-serializing-if.rs
@@ -0,0 +1,24 @@
+// Copyright 2018 Serde Developers
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#[macro_use]
+extern crate serde_derive;
+
+#[derive(Serialize)] //~ ERROR: proc-macro derive panicked
+//~^ HELP: #[serde(flatten] can not be combined with #[serde(skip_serializing_if = "...")]
+struct Foo {
+    #[serde(flatten, skip_serializing_if="Option::is_none")]
+    other: Option<Other>,
+}
+
+#[derive(Serialize)]
+struct Other {
+    x: u32
+}
+
+fn main() {}
diff --git a/test_suite/tests/compile-fail/conflict/flatten-skip-serializing.rs b/test_suite/tests/compile-fail/conflict/flatten-skip-serializing.rs
new file mode 100644
index 00000000..204f9bf3
--- /dev/null
+++ b/test_suite/tests/compile-fail/conflict/flatten-skip-serializing.rs
@@ -0,0 +1,24 @@
+// Copyright 2018 Serde Developers
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#[macro_use]
+extern crate serde_derive;
+
+#[derive(Serialize)] //~ ERROR: proc-macro derive panicked
+//~^ HELP: #[serde(flatten] can not be combined with #[serde(skip_serializing)]
+struct Foo {
+    #[serde(flatten, skip_serializing)]
+    other: Other,
+}
+
+#[derive(Serialize)]
+struct Other {
+    x: u32
+}
+
+fn main() {}