diff --git a/libglvnd.spec b/libglvnd.spec
index d7e0e9f..ad069ef 100644
--- a/libglvnd.spec
+++ b/libglvnd.spec
@@ -11,6 +11,10 @@ URL:            https://github.com/NVIDIA/libglvnd
 Source0:        libglvnd-%{version}%{?snapshot}.tar.gz
 Source1:        10-x11glvnd.conf
 
+#This library only target few architectures uses case
+#ExclusiveArch:  i686 x86_64 %{arm}
+#Doesn't build on i686 with tls
+#https://github.com/NVIDIA/libglvnd/issues/18
 ExclusiveArch:  x86_64 %{arm}
 
 BuildRequires:  libxml2-python