diff --git a/core/java/android/security/net/config/SystemCertificateSource.java b/core/java/android/security/net/config/SystemCertificateSource.java
index abef7b453c793..cfb195b9509c8 100644
--- a/core/java/android/security/net/config/SystemCertificateSource.java
+++ b/core/java/android/security/net/config/SystemCertificateSource.java
@@ -25,7 +25,10 @@ import java.io.File;
  * @hide
  */
 public final class SystemCertificateSource extends DirectoryCertificateSource {
-    private static final SystemCertificateSource INSTANCE = new SystemCertificateSource();
+    private static class NoPreloadHolder {
+        private static final SystemCertificateSource INSTANCE = new SystemCertificateSource();
+    }
+
     private final File mUserRemovedCaDir;
 
     private SystemCertificateSource() {
@@ -35,7 +38,7 @@ public final class SystemCertificateSource extends DirectoryCertificateSource {
     }
 
     public static SystemCertificateSource getInstance() {
-        return INSTANCE;
+        return NoPreloadHolder.INSTANCE;
     }
 
     @Override
diff --git a/core/java/android/security/net/config/UserCertificateSource.java b/core/java/android/security/net/config/UserCertificateSource.java
index 1a7d92456a3da..d6e2b3a8ca1f1 100644
--- a/core/java/android/security/net/config/UserCertificateSource.java
+++ b/core/java/android/security/net/config/UserCertificateSource.java
@@ -25,7 +25,9 @@ import java.io.File;
  * @hide
  */
 public final class UserCertificateSource extends DirectoryCertificateSource {
-    private static final UserCertificateSource INSTANCE = new UserCertificateSource();
+    private static class NoPreloadHolder {
+        private static final UserCertificateSource INSTANCE = new UserCertificateSource();
+    }
 
     private UserCertificateSource() {
         super(new File(
@@ -33,7 +35,7 @@ public final class UserCertificateSource extends DirectoryCertificateSource {
     }
 
     public static UserCertificateSource getInstance() {
-        return INSTANCE;
+        return NoPreloadHolder.INSTANCE;
     }
 
     @Override