diff --git a/stdlib/REPL/src/docview.jl b/stdlib/REPL/src/docview.jl
index a9ecd1e4bb1e4..66f2aba86384d 100644
--- a/stdlib/REPL/src/docview.jl
+++ b/stdlib/REPL/src/docview.jl
@@ -283,7 +283,7 @@ function summarize(io::IO, TT::Type, binding::Binding)
             println(io, "# Fields")
             println(io, "```")
             pad = maximum(length(string(f)) for f in fieldnames(T))
-            for (f, t) in zip(fieldnames(T), T.types)
+            for (f, t) in zip(fieldnames(T), fieldtypes(T))
                 println(io, rpad(f, pad), " :: ", t)
             end
             println(io, "```")
diff --git a/stdlib/REPL/test/docview.jl b/stdlib/REPL/test/docview.jl
index 160544eb475d2..9757cdb5df097 100644
--- a/stdlib/REPL/test/docview.jl
+++ b/stdlib/REPL/test/docview.jl
@@ -51,3 +51,11 @@ end
 @testset "Unicode doc lookup (#41589)" begin
     @test REPL.lookup_doc(:(÷=)) isa Markdown.MD
 end
+
+@testset "#44009" begin
+    R = Complex{<:Integer}
+    b = REPL.Binding(@__MODULE__, :R)
+    @test REPL.summarize(b, Tuple{}) isa Markdown.MD
+end
+
+