diff --git a/.coveralls.yml b/.coveralls.yml
new file mode 100644
index 00000000..ef53f1dc
--- /dev/null
+++ b/.coveralls.yml
@@ -0,0 +1,2 @@
+service_name: travis-pro
+repo_token: F9bs4Nop10JRgqPQXRcifyQKYhb3FczkS
diff --git a/src/JSON.h b/src/JSON.h
index 410eede8..b9552d95 100644
--- a/src/JSON.h
+++ b/src/JSON.h
@@ -428,4 +428,4 @@ class JSON
 };
 
 /// user-defined literal operator to create JSON objects from strings
-JSON operator ""_json(const char*, size_t);
+JSON operator "" _json(const char*, size_t);