diff --git a/exec.c b/exec.c
index 8b922db612..6d1e1e4c75 100644
--- a/exec.c
+++ b/exec.c
@@ -1638,7 +1638,6 @@ void qemu_ram_remap(ram_addr_t addr, ram_addr_t length)
                 abort();
             } else {
                 flags = MAP_FIXED;
-                munmap(vaddr, length);
                 if (block->fd >= 0) {
                     flags |= (block->flags & RAM_SHARED ?
                               MAP_SHARED : MAP_PRIVATE);