diff --git a/pkgs/servers/monitoring/prometheus/haproxy_exporter/default.nix b/pkgs/servers/monitoring/prometheus/haproxy_exporter/default.nix
deleted file mode 100644
index 8ea0677d163..00000000000
--- a/pkgs/servers/monitoring/prometheus/haproxy_exporter/default.nix
+++ /dev/null
@@ -1,25 +0,0 @@
-{ lib, goPackages, fetchFromGitHub }:
-
-let self = goPackages.buildGoPackage rec {
-  name = "prometheus-haproxy-exporter-0.4.0";
-  goPackagePath = "github.com/prometheus/haproxy_exporter";
-
-  src = fetchFromGitHub {
-    owner = "prometheus";
-    repo = "haproxy_exporter";
-    rev = "6ee6d1df3e68ed73df37c9794332b2594e4da45d";
-    sha256 = "0lbwv6jsdfjd9ihiky3lq7d5rkxqjh7xfaziw8i3w34a38japlpr";
-  };
-
-  buildInputs = [ goPackages.prometheus.client_golang ];
-
-  meta = with lib; {
-    description = "HAProxy Exporter for the Prometheus monitoring system";
-    homepage = https://github.com/prometheus/haproxy_exporter;
-    license = licenses.asl20;
-    maintainers = with maintainers; [ benley ];
-    platforms = platforms.unix;
-  };
-};
-
-in self.bin
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 74b58353e63..18ada8231dd 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9201,9 +9201,8 @@ let
   prometheus-alertmanager = goPackages.prometheus.alertmanager.bin;
   prometheus-cli = goPackages.prometheus.cli.bin;
   prometheus-collectd-exporter = goPackages.prometheus.collectd-exporter.bin;
+  prometheus-haproxy-exporter = goPackages.prometheus.haproxy-exporter.bin;
 
-  prometheus-haproxy-exporter =
-    callPackage ../servers/monitoring/prometheus/haproxy_exporter { };
   prometheus-mesos-exporter =
     callPackage ../servers/monitoring/prometheus/mesos_exporter { };
   prometheus-mysqld-exporter =
diff --git a/pkgs/top-level/go-packages.nix b/pkgs/top-level/go-packages.nix
index f1fdb6a3a1d..33aa17b5979 100644
--- a/pkgs/top-level/go-packages.nix
+++ b/pkgs/top-level/go-packages.nix
@@ -2051,6 +2051,21 @@ let
     };
   };
 
+  prometheus.haproxy-exporter = buildFromGitHub {
+    rev = "0.4.0";
+    owner = "prometheus";
+    repo = "haproxy_exporter";
+    sha256 = "0cwls1d4hmzjkwc50mjkxjb4sa4q6yq581wlc5sg9mdvl6g91zxr";
+    buildInputs = [ prometheus.client_golang ];
+    meta = with stdenv.lib; {
+      description = "HAProxy Exporter for the Prometheus monitoring system";
+      homepage = https://github.com/prometheus/haproxy_exporter;
+      license = licenses.asl20;
+      maintainers = with maintainers; [ benley ];
+      platforms = platforms.unix;
+    };
+  };
+
   prometheus.log = buildFromGitHub {
     rev    = "439e5db48fbb50ebbaf2c816030473a62f505f55";
     date   = "2015-05-29";