diff --git a/modern/src/maki-interpreter/tools/build-typescript-interfaces.js b/modern/src/maki-interpreter/tools/build-typescript-interfaces.js
index 479d8dc3..9ff89f2e 100644
--- a/modern/src/maki-interpreter/tools/build-typescript-interfaces.js
+++ b/modern/src/maki-interpreter/tools/build-typescript-interfaces.js
@@ -41,7 +41,7 @@ function argumentTypeForParameter(param) {
 
 function methodTypeForFunction(func) {
   const args = func.parameters.map(argumentTypeForParameter).join(", ");
-  return `${func.name}(${args}): ${mapType(func.result)};`;
+  return `${func.name.toLowerCase()}(${args}): ${mapType(func.result)};`;
 }
 
 function interfaceForObject(object) {