diff --git a/llvm.spec b/llvm.spec
index de81522..f1579f1 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -180,6 +180,8 @@ export CC=$TOPLEVEL/stage2/Release/bin/clang
 export CXX=$TOPLEVEL/stage2/Release/bin/clang++
 
 ../configure \
+        --prefix=%{_prefix} \
+	--libdir=%{_libdir} \
 	--enable-optimized \
 	--disable-assertions \
 	--enable-pic \