diff --git a/README.md b/README.md
index 22547428d..78d3ded4f 100644
--- a/README.md
+++ b/README.md
@@ -68,8 +68,6 @@ Currently, the `@compat` macro supports the following syntaxes:
 
 * `range` supporting `stop` as positional argument ([#28708]).
 
-* `mapslices` with `dims` keyword argument ([#27828]).
-
 * `hasproperty` and `hasfield` ([#28850]).
   `hasproperty` is defined only for Julia 0.7 or later.
 
diff --git a/src/Compat.jl b/src/Compat.jl
index addd90f3b..3d27c829c 100644
--- a/src/Compat.jl
+++ b/src/Compat.jl
@@ -82,12 +82,6 @@ end
     end
 end
 
-# https://github.com/JuliaLang/julia/pull/27828
-if VERSION < v"0.7.0-beta.73"
-    Base.mapslices(f, A::AbstractArray; dims=error("required keyword argument `dims` missing")) =
-        mapslices(f, A, dims)
-end
-
 # https://github.com/JuliaLang/julia/pull/28302
 if VERSION < v"0.7.0-beta2.169"
     const floatmin = realmin
diff --git a/test/old.jl b/test/old.jl
index 6962c12bb..af3edd6fd 100644
--- a/test/old.jl
+++ b/test/old.jl
@@ -1254,3 +1254,13 @@ let
     @test Compat.split(str, r"\.+:\.+"; limit=3, keepempty=false) == ["a","ba","cba.:.:.dcba.:."]
     @test Compat.split(str, r"\.+:\.+"; limit=3, keepempty=true) == ["a","ba","cba.:.:.dcba.:."]
 end
+
+# 0.7.0-beta.73
+let a = rand(5,5)
+    s = mapslices(sort, a, dims=[1])
+    S = mapslices(sort, a, dims=[2])
+    for i = 1:5
+        @test s[:,i] == sort(a[:,i])
+        @test vec(S[i,:]) == sort(vec(a[i,:]))
+    end
+end
diff --git a/test/runtests.jl b/test/runtests.jl
index 5cd45f19f..cf416b7c1 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -98,16 +98,6 @@ let
     @test_throws UndefKeywordError func5(x=2)
 end
 
-# 0.7.0-beta.73
-let a = rand(5,5)
-    s = mapslices(sort, a, dims=[1])
-    S = mapslices(sort, a, dims=[2])
-    for i = 1:5
-        @test s[:,i] == sort(a[:,i])
-        @test vec(S[i,:]) == sort(vec(a[i,:]))
-    end
-end
-
 # 0.7.0-beta2.169
 @test floatmin(Float16) == @eval $(Core.Intrinsics.bitcast(Float16, 0x0400))
 @test floatmax(Float32) == @eval $(Core.Intrinsics.bitcast(Float32, 0x7f7fffff))