diff --git a/base/strings/unicode.jl b/base/strings/unicode.jl
index d6b3e708beda0..61d5aa7b6e074 100644
--- a/base/strings/unicode.jl
+++ b/base/strings/unicode.jl
@@ -314,7 +314,11 @@ function isupper(c::AbstractChar)
     cat == UTF8PROC_CATEGORY_LU || cat == UTF8PROC_CATEGORY_LT
 end
 
-# Documented in Unicode module
+"""
+    iscased(c::AbstractChar) -> Bool
+
+Tests whether a character is cased, i.e. is lower-, upper- or title-cased.
+"""
 function iscased(c::AbstractChar)
     cat = category_code(c)
     return cat == UTF8PROC_CATEGORY_LU ||
diff --git a/stdlib/Unicode/src/Unicode.jl b/stdlib/Unicode/src/Unicode.jl
index fa220f4cc24fd..06eab502f1e54 100644
--- a/stdlib/Unicode/src/Unicode.jl
+++ b/stdlib/Unicode/src/Unicode.jl
@@ -73,13 +73,6 @@ true
 """
 isassigned(c) = Base.Unicode.isassigned(c)
 
-"""
-    iscased(c::AbstractChar) -> Bool
-
-Tests whether a character is cased, i.e. is lower-, upper- or title-cased.
-"""
-iscased(c::AbstractChar) = Base.Unicode.iscased(c)
-
 """
     graphemes(s::AbstractString) -> GraphemeIterator
 
diff --git a/stdlib/Unicode/test/runtests.jl b/stdlib/Unicode/test/runtests.jl
index 347ad23f77cf3..ccdb4edb393a8 100644
--- a/stdlib/Unicode/test/runtests.jl
+++ b/stdlib/Unicode/test/runtests.jl
@@ -2,7 +2,7 @@
 
 using Test
 using Unicode
-using Unicode: normalize, isassigned, iscased
+using Unicode: normalize, isassigned
 
 @testset "string normalization" begin
     # normalize (Unicode normalization etc.):
@@ -376,7 +376,7 @@ end
         @test titlecase("abcD   EFG\n\thij", strict=true)  == "Abcd   Efg\n\tHij"
         @test titlecase("abcD   EFG\n\thij", strict=false) == "AbcD   EFG\n\tHij"
         @test titlecase("abc-def")                     == "Abc-Def"
-        @test titlecase("abc-def", wordsep = !iscased) == "Abc-Def"
+        @test titlecase("abc-def", wordsep = !Base.Unicode.iscased) == "Abc-Def"
         @test titlecase("abc-def", wordsep = isspace)  == "Abc-def"
     end
 end