diff --git a/media/mtp/MtpFfsHandle.cpp b/media/mtp/MtpFfsHandle.cpp
index b72fcfb..2ffd775 100644
--- a/media/mtp/MtpFfsHandle.cpp
+++ b/media/mtp/MtpFfsHandle.cpp
@@ -362,12 +362,10 @@
 
 void MtpFfsHandle::cancelTransaction() {
     // Device cancels by stalling both bulk endpoints.
-    void *buf = malloc(sizeof(char));
-    if (::read(mBulkIn, buf, 0) != -1 || errno != EBADMSG)
+    if (::read(mBulkIn, nullptr, 0) != -1 || errno != EBADMSG)
         PLOG(ERROR) << "Mtp stall failed on bulk in";
-    if (::write(mBulkOut, buf, 0) != -1 || errno != EBADMSG)
+    if (::write(mBulkOut, nullptr, 0) != -1 || errno != EBADMSG)
         PLOG(ERROR) << "Mtp stall failed on bulk out";
-    free(buf);
     mCanceled = true;
     errno = ECANCELED;
 }