diff --git a/llvm.changes b/llvm.changes
index 2a0da6e..1840dda 100644
--- a/llvm.changes
+++ b/llvm.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Dec 14 18:13:40 UTC 2012 - idonmez@suse.com
+
+- Disable compilation on PPC, only PPC64 is supported.
+
 -------------------------------------------------------------------
 Fri Dec 14 13:18:39 UTC 2012 - idonmez@suse.com
 
diff --git a/llvm.spec b/llvm.spec
index 49593dd..6bf6a97 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -65,6 +65,8 @@ BuildRequires:  libffi-devel
 BuildRequires:  libtool
 BuildRequires:  python-base
 BuildRequires:  python-sphinx
+# llvm does not work on ppc, only ppc64
+ExcludeArch:    ppc
 
 %description
 LLVM is a compiler infrastructure designed for compile-time,