diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 43d23948..74ea974 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -120,7 +120,7 @@
 		K(i.freeram-i.freehigh),
 #endif
 #ifndef CONFIG_MMU
-		K((unsigned long) atomic_read(&mmap_pages_allocated)),
+		K((unsigned long) atomic_long_read(&mmap_pages_allocated)),
 #endif
 		K(i.totalswap),
 		K(i.freeswap),