1 files changed, 1 insertions, 1 deletions

diff --git a/miscutils/devmem.c b/miscutils/devmem.c
index 4903b5dcb..e13dedc0a 100644
--- a/miscutils/devmem.c
+++ b/miscutils/devmem.c
@@ -119,7 +119,7 @@ int devmem_main(int argc UNUSED_PARAM, char **argv)
         }
 
         if (ENABLE_FEATURE_CLEAN_UP) {
-                if (munmap(map_base, page_size) == -1)
+                if (munmap(map_base, page_size * 2) == -1)
                         bb_perror_msg_and_die("munmap");
                 close(fd);
         }