1 files changed, 1 insertions, 1 deletions

diff --git a/arch/um/sys-x86_64/unmap.c b/arch/um/sys-x86_64/unmap.c
index bc7094cce47e..f4a4bffd8a18 100644
--- a/arch/um/sys-x86_64/unmap.c
+++ b/arch/um/sys-x86_64/unmap.c
@@ -15,7 +15,7 @@ int switcheroo(int fd, int prot, void *from, void *to, int size)
         if(munmap(to, size) < 0){
                 return(-1);
         }
-        if(mmap(to, size, prot, MAP_SHARED | MAP_FIXED, fd, 0) != to){
+        if(mmap(to, size, prot, MAP_SHARED | MAP_FIXED, fd, 0) == (void*) -1){
                 return(-1);
         }
         if(munmap(from, size) < 0){