diff --git a/man3/getcwd.3 b/man3/getcwd.3
index 6d1cbcf05..445515fe5 100644
--- a/man3/getcwd.3
+++ b/man3/getcwd.3
@@ -126,7 +126,7 @@ is set to
 .BR ENAMETOOLONG .
 (Note that on some systems,
 .B PATH_MAX
-may not not be a compile-time constant;
+may not be a compile-time constant;
 furthermore, its value may depend on the file system, see
 .BR pathconf (3).)
 For portability and security reasons, use of