2 files changed, 2 insertions, 0 deletions

diff --git a/.SRCINFO b/.SRCINFO
index f274e2fb744f..b9321233bbcb 100644
--- a/.SRCINFO
+++ b/.SRCINFO
@@ -13,6 +13,7 @@ pkgbase = coreclr-git
 	depends = lldb
 	depends = libunwind
 	depends = lttng-ust
+	optdepends = mono: for building mscorlib.dll
 	provides = coreclr
 	source = git+https://github.com/dotnet/coreclr
 	sha1sums = SKIP
diff --git a/PKGBUILD b/PKGBUILD
index ffb74e9ee693..0dac5d74e017 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -9,6 +9,7 @@ url="https://github.com/dotnet/coreclr"
 license=(MIT)
 depends=('icu' 'lldb' 'libunwind' 'lttng-ust')
 makedepends=('git' 'cmake' 'clang35' 'llvm35')
+optdepends=('mono: for building mscorlib.dll')
 provides=('coreclr')
 source=('git+https://github.com/dotnet/coreclr') 
 sha1sums=('SKIP')