diff --git a/lib/libc/locale/isgraph.3 b/lib/libc/locale/isgraph.3
index ccf5fc73cf6b..3a8a2cbc1b42 100644
--- a/lib/libc/locale/isgraph.3
+++ b/lib/libc/locale/isgraph.3
@@ -51,7 +51,8 @@
 .Sh DESCRIPTION
 The
 .Fn isgraph
-function tests for any printing character except space.
+function tests for any printing character except space (' ') and other 
+locale specific space-like characters.
 For single C
 .Va char Ns s
 locales (see
diff --git a/lib/libc/locale/isprint.3 b/lib/libc/locale/isprint.3
index 6485a64269c8..12c7459b64e8 100644
--- a/lib/libc/locale/isprint.3
+++ b/lib/libc/locale/isprint.3
@@ -51,7 +51,7 @@
 .Sh DESCRIPTION
 The
 .Fn isprint
-function tests for any printing character including space.
+function tests for any printing character including space (' ').
 For single C
 .Va char Ns s
 locales (see