diff --git a/src/librustdoc/clean/mod.rs b/src/librustdoc/clean/mod.rs
index b95ca2787074..7cde1a9907e9 100644
--- a/src/librustdoc/clean/mod.rs
+++ b/src/librustdoc/clean/mod.rs
@@ -1571,7 +1571,7 @@ impl PrimitiveType {
         None
     }
 
-    pub fn to_string(&self) -> &'static str {
+    pub fn as_str(&self) -> &'static str {
         match *self {
             PrimitiveType::Isize => "isize",
             PrimitiveType::I8 => "i8",
@@ -1596,7 +1596,7 @@ impl PrimitiveType {
     }
 
     pub fn to_url_str(&self) -> &'static str {
-        self.to_string()
+        self.as_str()
     }
 
     /// Creates a rustdoc-specific node id for primitive types.
diff --git a/src/librustdoc/html/format.rs b/src/librustdoc/html/format.rs
index adcdc7aaab40..1b5ac24d86dd 100644
--- a/src/librustdoc/html/format.rs
+++ b/src/librustdoc/html/format.rs
@@ -457,7 +457,7 @@ impl fmt::Display for clean::Type {
                 tybounds(f, typarams)
             }
             clean::Infer => write!(f, "_"),
-            clean::Primitive(prim) => primitive_link(f, prim, prim.to_string()),
+            clean::Primitive(prim) => primitive_link(f, prim, prim.as_str()),
             clean::BareFunction(ref decl) => {
                 write!(f, "{}{}fn{}{}",
                        UnsafetySpace(decl.unsafety),