diff --git a/src/librustdoc/markdown_pass.rs b/src/librustdoc/markdown_pass.rs
index d7dd288ed89..70d5c730569 100644
--- a/src/librustdoc/markdown_pass.rs
+++ b/src/librustdoc/markdown_pass.rs
@@ -734,8 +734,8 @@ fn should_write_trait_method_header() {
 #[test]
 fn should_write_trait_method_signature() {
     let markdown = test::render(
-        ~"trait i { fn a(); }");
-    fail_unless!(str::contains(markdown, ~"\n    fn a()"));
+        ~"trait i { fn a(&self); }");
+    fail_unless!(str::contains(markdown, ~"\n    fn a(&self)"));
 }
 
 fn write_impl(ctxt: &Ctxt, doc: doc::ImplDoc) {
@@ -773,8 +773,8 @@ fn should_write_impl_method_header() {
 #[test]
 fn should_write_impl_method_signature() {
     let markdown = test::render(
-        ~"impl int { fn a() { } }");
-    fail_unless!(str::contains(markdown, ~"\n    fn a()"));
+        ~"impl int { fn a(&mut self) { } }");
+    fail_unless!(str::contains(markdown, ~"\n    fn a(&mut self)"));
 }
 
 fn write_type(
diff --git a/src/librustdoc/tystr_pass.rs b/src/librustdoc/tystr_pass.rs
index 916101709fe..54197e316da 100644
--- a/src/librustdoc/tystr_pass.rs
+++ b/src/librustdoc/tystr_pass.rs
@@ -259,9 +259,9 @@ fn get_method_sig(
 
 #[test]
 fn should_add_trait_method_sigs() {
-    let doc = test::mk_doc(~"trait i { fn a<T>() -> int; }");
+    let doc = test::mk_doc(~"trait i { fn a<T>(&mut self) -> int; }");
     fail_unless!(doc.cratemod().traits()[0].methods[0].sig
-        == Some(~"fn a<T>() -> int"));
+        == Some(~"fn a<T>(&mut self) -> int"));
 }
 
 fn fold_impl(
@@ -318,9 +318,9 @@ fn should_add_impl_self_ty() {
 
 #[test]
 fn should_add_impl_method_sigs() {
-    let doc = test::mk_doc(~"impl int { fn a<T>() -> int { fail!() } }");
+    let doc = test::mk_doc(~"impl int { fn a<T>(&self) -> int { fail!() } }");
     fail_unless!(doc.cratemod().impls()[0].methods[0].sig
-        == Some(~"fn a<T>() -> int"));
+        == Some(~"fn a<T>(&self) -> int"));
 }
 
 fn fold_type(