diff --git a/src/java_tools/junitrunner/java/com/google/testing/junit/runner/junit4/JUnit4Config.java b/src/java_tools/junitrunner/java/com/google/testing/junit/runner/junit4/JUnit4Config.java
index 94c181bf2e67d6..21bd7855570bf3 100644
--- a/src/java_tools/junitrunner/java/com/google/testing/junit/runner/junit4/JUnit4Config.java
+++ b/src/java_tools/junitrunner/java/com/google/testing/junit/runner/junit4/JUnit4Config.java
@@ -86,7 +86,7 @@ private JUnit4Config(
 
   private static boolean installSecurityManager(Properties systemProperties) {
     String securityManager = systemProperties.getProperty("java.security.manager");
-    if (securityManager != null) {
+    if (securityManager != null && !securityManager.equals("allow")) {
       return false; // Don't install over the specified security manager
     }
     return Boolean.valueOf(