diff --git a/src/WeakRefStrings.jl b/src/WeakRefStrings.jl
index 2168cbc..32e80e9 100644
--- a/src/WeakRefStrings.jl
+++ b/src/WeakRefStrings.jl
@@ -408,7 +408,7 @@ function Base.push!(arr::StringVector, val::Missing)
     push!(arr.lengths, 0)
 end
 
-function Base.deleteat!(arr::StringVector, idx::Integer)
+function Base.deleteat!(arr::StringVector, idx)
     deleteat!(arr.lengths, idx)
     deleteat!(arr.offsets, idx)
     arr
diff --git a/test/runtests.jl b/test/runtests.jl
index 273a147..3720d45 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -194,4 +194,16 @@ end
         sv = StringVector{EscapedString{UInt8('"')}}(["Text\"\"inner quote\"\"Parse", "JuliaDB"])
         @test sv[1] == "Text\"inner quote\"Parse"
     end
+
+    @testset "deleteat!" begin
+        sv1 = StringVector{WeakRefString{UInt8}}(["foo", "bar"])
+        @test deleteat!(copy(sv1), 1) == ["bar"]
+        @test deleteat!(copy(sv1), [1,2]) == []
+        @test deleteat!(copy(sv1), 1:2) == []
+
+        sv2 = StringVector{String}(["baz", "qux"])
+        @test deleteat!(copy(sv2), 1) == ["qux"]
+        @test deleteat!(copy(sv2), [1,2]) == []
+        @test deleteat!(copy(sv2), 1:2) == []
+    end
 end