diff --git a/glslang.spec b/glslang.spec
index 9c19bb4..ece16c2 100644
--- a/glslang.spec
+++ b/glslang.spec
@@ -78,9 +78,9 @@ compressor's dictionary can find better cross module commonality.
 make %{?_smp_mflags}
 
 %install
-b="%build
 %global _lto_cflags %{_lto_cflags} -ffat-lto-objectsroot"
 %cmake_install
+b="%buildroot"
 mkdir -p "$b/%_includedir"
 cp -a SPIRV glslang "$b/%_includedir/"
 find "$b/%_includedir/" -type f ! -iname "*.h" -a ! -iname "*.hpp" -print -delete