diff --git a/qemu/util/oslib-posix.c b/qemu/util/oslib-posix.c
index 3402e1d1..615e477e 100644
--- a/qemu/util/oslib-posix.c
+++ b/qemu/util/oslib-posix.c
@@ -139,7 +139,7 @@ void qemu_vfree(void *ptr)
 {
 #ifdef __MINGW32__
     if (ptr) {
-        VirtualFree(ptr, 0, MEM_RELEASE);
+        __mingw_aligned_free(ptr);
     }
 #else
     //trace_qemu_vfree(ptr);
diff --git a/uc.c b/uc.c
index 7dd49883..73386774 100644
--- a/uc.c
+++ b/uc.c
@@ -550,7 +550,7 @@ uc_err uc_close(uc_engine *uc)
     g_free(uc->l1_map);
 
     if (uc->bounce.buffer) {
-        free(uc->bounce.buffer);
+        qemu_vfree(uc->bounce.buffer);
     }
 
     // free hooks and hook lists