diff --git a/man2/mmap.2 b/man2/mmap.2
index f4d69ea4a..53ce05f71 100644
--- a/man2/mmap.2
+++ b/man2/mmap.2
@@ -276,7 +276,7 @@ with respect to the
 .I addr
 enforcement, but different in that
 .B MAP_FIXED_NOREPLACE
-never clobbers a pre-existing mapped range.
+never clobbers a preexisting mapped range.
 If the requested range would collide with an existing mapping,
 then this call fails with
 .B EEXIST.
@@ -284,7 +284,7 @@ This flag can therefore be used as a way to atomically
 (with respect to other threads) attempt to map an address range:
 one thread will succeed; all others will report failure.
 Please note that older kernels which do not recognize this
-flag will typically (upon detecting a collision with a pre-existing mapping)
+flag will typically (upon detecting a collision with a preexisting mapping)
 fall back to a "non-MAP_FIXED" type of behavior:
 they will return an address that is different than the requested one.
 Therefore, backward-compatible software