diff --git a/glslang.spec b/glslang.spec
index 7742502..222c68c 100644
--- a/glslang.spec
+++ b/glslang.spec
@@ -77,7 +77,7 @@ compressor's dictionary can find better cross module commonality.
 %install
 %global _lto_cflags %{_lto_cflags} -ffat-lto-objects
 %cmake_install
-b=%{buildroot}
+b="%buildroot"
 find "$b" -type f -name "*.a" -print -delete
 mkdir -p "$b/%_includedir"
 cp -a SPIRV glslang "$b/%_includedir/"