diff --git a/docs/str.1 b/docs/str.1
index 666f0b1..ef86861 100644
--- a/docs/str.1
+++ b/docs/str.1
@@ -34,12 +34,6 @@ tests.
 When invoked incorrectly, a debug message will be printed and the program will
 exit with the appropriate sysexits.h(3) error code.
 
-.SH DEPRECATED FEATURES
-
-Originally, there was an isvalue type as an extension to ctype.h(3), but it
-was removed in favor of using strcmp(1) to compare strings against the empty
-string ('').
-
 .SH BUGS
 
 There’s no way of knowing which argument failed the test without re-testing