diff --git a/packages/conf-libcurl/conf-libcurl.2/opam b/packages/conf-libcurl/conf-libcurl.2/opam
index 1ebd06a141f..660ff80ef9a 100644
--- a/packages/conf-libcurl/conf-libcurl.2/opam
+++ b/packages/conf-libcurl/conf-libcurl.2/opam
@@ -3,7 +3,10 @@ maintainer: "blue-prawn"
 authors: ["Daniel Stenberg"]
 homepage: "http://curl.haxx.se/"
 license: "BSD-like"
-build: ["curl-config" "--libs"]
+build: [
+  ["sh" "-exc" "curl-config --libs"] {os = "win32" & os-distribution != "cygwinports"}
+  ["curl-config" "--libs"] {os != "win32" | os-distribution = "cygwinports"}
+]
 depexts: [
   ["libcurl4-gnutls-dev"] {os-family = "debian"}
   ["libcurl4-gnutls-dev"] {os-family = "ubuntu"}
@@ -12,6 +15,7 @@ depexts: [
   ["curl"] {os-distribution = "nixos"}
   ["curl"] {os-distribution = "arch"}
   ["curl"] {os = "win32" & os-distribution = "cygwinports"}
+  ["libcurl-devel"] {os = "win32" & os-distribution = "cygwin"}
   ["curl-dev"] {os-distribution = "alpine"}
   ["libcurl-devel"] {os-family = "suse" | os-family = "opensuse"}
   ["libcurl-devel"] {os-distribution = "fedora"}