diff --git a/lib/contracts/compiler.js b/lib/contracts/compiler.js
index 9a7778e5..e6c4fc23 100644
--- a/lib/contracts/compiler.js
+++ b/lib/contracts/compiler.js
@@ -16,16 +16,13 @@ class Compiler {
 
     let pluginCompilers = self.plugins.getPluginsProperty('compilers', 'compilers');
     pluginCompilers.forEach(function (compilerObject) {
-      if(!available_compilers[compilerObject.extension]){
-        available_compilers[compilerObject.extension] = [];
-      }
-      available_compilers[compilerObject.extension].push(compilerObject.cb);
+      available_compilers[compilerObject.extension] = compilerObject.cb;
     });
 
     let compiledObject = {};
 
     async.eachObject(available_compilers,
-      function (extension, compilers, callback) {
+      function (extension, compiler, callback) {
         let matchingFiles = contractFiles.filter(function (file) {
           let fileMatch = file.filename.match(/\.[0-9a-z]+$/);
           if (fileMatch && (fileMatch[0] === extension)) {
@@ -38,9 +35,6 @@ class Compiler {
         if (!matchingFiles || !matchingFiles.length) {
           return callback();
         }
-
-        let compiler = compilers[0];
-
         compiler.call(compiler, matchingFiles, function (err, compileResult) {
           Object.assign(compiledObject, compileResult);
           callback(err, compileResult);