diff --git a/src/config/config.js b/src/config/config.js
index e7f68435..4b273c91 100644
--- a/src/config/config.js
+++ b/src/config/config.js
@@ -58,7 +58,7 @@ export default {
    * @memberof module:config
    * @property {Integer} preferredAEADAlgorithm Default AEAD mode {@link module:enums.aead}
    */
-  preferredAEADAlgorithm: enums.aead.eax,
+  preferredAEADAlgorithm: enums.aead.gcm,
   /**
    * Chunk Size Byte for Authenticated Encryption with Additional Data (AEAD) mode
    * Only has an effect when aeadProtect is set to true.
diff --git a/src/enums.js b/src/enums.js
index b120ebb7..342373e0 100644
--- a/src/enums.js
+++ b/src/enums.js
@@ -197,6 +197,7 @@ export default {
   aead: {
     eax: 1,
     ocb: 2,
+    gcm: 3,
     experimentalGCM: 100 // Private algorithm
   },