diff --git a/lib/compute-witness.js b/lib/compute-witness.js
index 02a9c18..552ad84 100644
--- a/lib/compute-witness.js
+++ b/lib/compute-witness.js
@@ -37,7 +37,7 @@ async function computeWitness(codePath, outputDirectory = './', outputName = 'wi
   return new Promise(resolve => {
     const zokrates = spawn(
       '/app/zokrates',
-      ['compute-witness', '-i', codePath, '-o', `${parsedOutputPath}${outputName}`, '-a', args],
+      ['compute-witness', '-i', codePath, '-o', `${parsedOutputPath}${outputName}`, '-a', ...args],
       {
         stdio: ['pipe', 'pipe', 'pipe'],
         env: {