diff --git a/config/karma.conf.js b/config/karma.conf.js
index 90f2e1d1e..ee229d296 100644
--- a/config/karma.conf.js
+++ b/config/karma.conf.js
@@ -12,7 +12,7 @@ if (process.env.TRAVIS) {
   browsers.push('Chrome')
 }
 
-if (!process.env.DEBUG) {
+if (!process.env.DEBUG && process.env.PHANTOM !== 'off') {
   browsers.push('PhantomJS')
 }