diff --git a/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp b/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp
index 8c1ef3b..bd11326 100644
--- a/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp
+++ b/media/libstagefright/xmlparser/MediaCodecsXmlParser.cpp
@@ -1069,7 +1069,7 @@
         codec.rank = rank;
     }
 
-    codec.variantSet = variants;
+    codec.variantSet.insert(variants.begin(), variants.end());
 
     // we allow sets of domains...
     for (const std::string &domain : domains) {