diff --git a/media/codec2/sfplugin/CCodecConfig.cpp b/media/codec2/sfplugin/CCodecConfig.cpp
index 96f86e8..79c6227 100644
--- a/media/codec2/sfplugin/CCodecConfig.cpp
+++ b/media/codec2/sfplugin/CCodecConfig.cpp
@@ -1151,14 +1151,11 @@
 
     bool changed = false;
     if (domain & mInputDomain) {
-        sp<AMessage> oldFormat = mInputFormat;
-        mInputFormat = mInputFormat->dup(); // trigger format changed
+        sp<AMessage> oldFormat = mInputFormat->dup();
         mInputFormat->extend(getFormatForDomain(reflected, mInputDomain));
         if (mInputFormat->countEntries() != oldFormat->countEntries()
                 || mInputFormat->changesFrom(oldFormat)->countEntries() > 0) {
             changed = true;
-        } else {
-            mInputFormat = oldFormat; // no change
         }
     }
     if (domain & mOutputDomain) {