diff --git a/lib/compiler.js b/lib/compiler.js
index 54453fc96..49c5dcfd0 100644
--- a/lib/compiler.js
+++ b/lib/compiler.js
@@ -22,8 +22,8 @@ Compiler.prototype.compile_solidity = function(contractFiles) {
 
   var output = solc.compile({sources: input}, 1);
   
-  if (output.errors.length > 0) 
-    throw new Error ("Solidity errors: " + output.errors))
+  if (output.errors) 
+    throw new Error ("Solidity errors: " + output.errors)
 
   var json = output.contracts;