diff --git a/testing/gtest/rungtests.py b/testing/gtest/rungtests.py
index 269db1850802..09046e3632ec 100644
--- a/testing/gtest/rungtests.py
+++ b/testing/gtest/rungtests.py
@@ -20,7 +20,7 @@ log = mozlog.unstructured.getLogger('gtest')
 
 class GTests(object):
     # Time (seconds) to wait for test process to complete
-    TEST_PROC_TIMEOUT = 1800
+    TEST_PROC_TIMEOUT = 1200
     # Time (seconds) in which process will be killed if it produces no output.
     TEST_PROC_NO_OUTPUT_TIMEOUT = 300