diff --git a/Build/NullSoftInstaller.hs b/Build/NullSoftInstaller.hs
index e0752024c4..e6c6cd79bf 100644
--- a/Build/NullSoftInstaller.hs
+++ b/Build/NullSoftInstaller.hs
@@ -157,4 +157,5 @@ cygwinDlls =
 	, "libcrypto.dll"
 	, "libssl.dll"
 	, "cyggcrypt-11.dll"
+	, "cyggpg-error-0.dll"
 	]