diff --git a/libavcodec/mediacodec_wrapper.c b/libavcodec/mediacodec_wrapper.c
index 5213cf640a..79abc8b6aa 100644
--- a/libavcodec/mediacodec_wrapper.c
+++ b/libavcodec/mediacodec_wrapper.c
@@ -1303,6 +1303,12 @@ int ff_AMediaCodec_delete(FFAMediaCodec* codec)
         ret = AVERROR_EXTERNAL;
     }
 
+    (*env)->DeleteGlobalRef(env, codec->input_buffers);
+    codec->input_buffers = NULL;
+
+    (*env)->DeleteGlobalRef(env, codec->output_buffers);
+    codec->output_buffers = NULL;
+
     (*env)->DeleteGlobalRef(env, codec->object);
     codec->object = NULL;