diff --git a/codegen/src/parser/uri_macro.rs b/codegen/src/parser/uri_macro.rs
index dffdf8f0..33772d2a 100644
--- a/codegen/src/parser/uri_macro.rs
+++ b/codegen/src/parser/uri_macro.rs
@@ -78,6 +78,12 @@ impl UriParams {
             Some((symbol, _, _)) => {
                 let string = symbol.as_str();
                 let span = parser.prev_span;
+                if string.contains('<') || !string.starts_with('/') {
+                    let mut diag = ecx.struct_span_err(span, "invalid mount point");
+                    diag.help("mount points must be static, absolute URIs: `/example`");
+                    return Err(diag);
+                }
+
                 parser.expect(&Token::Comma)?;
                 Some(span.wrap(string))
             }
diff --git a/codegen/tests/compile-fail/typed-uris-invalid-syntax.rs b/codegen/tests/compile-fail/typed-uris-invalid-syntax.rs
index 124c3b45..eeb84532 100644
--- a/codegen/tests/compile-fail/typed-uris-invalid-syntax.rs
+++ b/codegen/tests/compile-fail/typed-uris-invalid-syntax.rs
@@ -12,8 +12,10 @@ fn main() {
     uri!(simple: "Hello", id = 100); //~ ERROR cannot be mixed
     uri!(simple,); //~ ERROR expected one of `::`, `:`, or `<eof>`
     uri!(simple:); //~ ERROR expected argument list
-    uri!("mount"); //~ ERROR expected `,`, found `<eof>`
-    uri!("mount",); //~ ERROR expected identifier
+    uri!("/mount"); //~ ERROR expected `,`, found `<eof>`
+    uri!("/mount",); //~ ERROR expected identifier
+    uri!("mount", simple); //~ ERROR invalid mount point
+    uri!("/mount/<id>", simple); //~ ERROR invalid mount point
     uri!(); //~ ERROR cannot be empty
     uri!(simple: id = ); //~ ERROR expected argument list
         //~^ ERROR expected expression