diff --git a/src/Curl/Easy.jl b/src/Curl/Easy.jl
index 7e2d466..0dd1108 100644
--- a/src/Curl/Easy.jl
+++ b/src/Curl/Easy.jl
@@ -252,11 +252,13 @@ function get_response_info(easy::Easy)
         for hdr in easy.res_hdrs
             if contains(hdr, r"^\s*$")
                 # ignore
-            elseif (m = match(r"^(HTTP/\d+(?:.\d+)?\s+\d+\b.*?)\s*$", hdr)) !== nothing
-                message = m.captures[1]
+            elseif (m = match(r"^(HTTP/\d+(?:.\d+)?\s+\d+\b.*?)\s*$", hdr); m) !== nothing
+                message = m.captures[1]::SubString{String}
                 empty!(headers)
-            elseif (m = match(r"^(\S[^:]*?)\s*:\s*(.*?)\s*$", hdr)) !== nothing
-                push!(headers, lowercase(m.captures[1]) => m.captures[2])
+            elseif (m = match(r"^(\S[^:]*?)\s*:\s*(.*?)\s*$", hdr); m) !== nothing
+                key = lowercase(m.captures[1]::SubString{String})
+                val = m.captures[2]::SubString{String}
+                push!(headers, key => val)
             else
                 @warn "malformed HTTP header" url status header=hdr
             end
diff --git a/src/Curl/Multi.jl b/src/Curl/Multi.jl
index 238aa4a..eb16d00 100644
--- a/src/Curl/Multi.jl
+++ b/src/Curl/Multi.jl
@@ -55,7 +55,7 @@ end
 function remove_handle(multi::Multi, easy::Easy)
     lock(multi.lock) do
         @check curl_multi_remove_handle(multi.handle, easy.handle)
-        deleteat!(multi.easies, findlast(==(easy), multi.easies))
+        deleteat!(multi.easies, findlast(==(easy), multi.easies)::Int)
         !isempty(multi.easies) && return
         cleanup_cb = @cfunction(cleanup_callback, Cvoid, (Ptr{Cvoid},))
         if multi.grace <= 0
diff --git a/src/Downloads.jl b/src/Downloads.jl
index 6b73be3..6a6c5cb 100644
--- a/src/Downloads.jl
+++ b/src/Downloads.jl
@@ -228,7 +228,7 @@ function download(
             progress = progress,
             verbose = verbose,
             downloader = downloader,
-        )
+        )::Response
         status_ok(response.proto, response.status) && return output
         throw(RequestError(url, Curl.CURLE_OK, "", response))
     end