diff --git a/dist/nomnoml.js b/dist/nomnoml.js
index ec058bd..6fd5ab5 100644
--- a/dist/nomnoml.js
+++ b/dist/nomnoml.js
@@ -165,7 +165,7 @@ var nomnoml;
         var source = fs.readFileSync(filepath, { encoding: 'utf8' });
         var directory = path.dirname(filepath);
         return source.replace(/#import: *(.*)/g, function (a, file) {
-            return compileFile(path.join(directory, file), depth + 1);
+            return compileFile(path.join(directory, file), maxImportDepth, depth + 1);
         });
     }
     nomnoml.compileFile = compileFile;
diff --git a/src/node-compiler.ts b/src/node-compiler.ts
index d41011b..c3972fa 100644
--- a/src/node-compiler.ts
+++ b/src/node-compiler.ts
@@ -6,7 +6,7 @@ namespace nomnoml {
     }
   }
 
-  export function compileFile(filepath: string, maxImportDepth: number, depth?: number): string {
+  export function compileFile(filepath: string, maxImportDepth: number, depth: number): string {
     var fs = require('fs')
     var path = require('path')
 
@@ -18,7 +18,7 @@ namespace nomnoml {
     var directory = path.dirname(filepath)
 
     return source.replace(/#import: *(.*)/g, function (a: any, file: string) {
-      return compileFile(path.join(directory, file), depth+1)
+      return compileFile(path.join(directory, file), maxImportDepth, depth+1)
     })
   }