diff --git a/src/router.rs b/src/router.rs
index f5af72d8b..7c52a7fef 100644
--- a/src/router.rs
+++ b/src/router.rs
@@ -61,6 +61,18 @@ impl<State: 'static> Router<State> {
             // if not then fallback to the behavior of HTTP GET else proceed as usual
 
             self.route(path, http::Method::GET)
+        } else if self
+            .method_map
+            .iter()
+            .filter(|(k, _)| *k != method)
+            .any(|(_, r)| r.recognize(path).is_ok())
+        {
+            // If this `path` can be handled by a callback registered with a different HTTP method
+            // should return 405 Method Not Allowed
+            Selection {
+                endpoint: &method_not_allowed,
+                params: Params::new(),
+            }
         } else {
             Selection {
                 endpoint: &not_found_endpoint,
@@ -73,3 +85,7 @@ impl<State: 'static> Router<State> {
 fn not_found_endpoint<State>(_cx: Request<State>) -> BoxFuture<'static, Response> {
     Box::pin(async move { Response::new(http::StatusCode::NOT_FOUND.as_u16()) })
 }
+
+fn method_not_allowed<State>(_cx: Request<State>) -> BoxFuture<'static, Response> {
+    Box::pin(async move { Response::new(http::StatusCode::METHOD_NOT_ALLOWED.as_u16()) })
+}