diff --git a/glslang.spec b/glslang.spec
index c96feb6..9f5ee74 100644
--- a/glslang.spec
+++ b/glslang.spec
@@ -61,8 +61,10 @@ make %{?_smp_mflags}
 
 %install
 %cmake_install
-mkdir -p "%buildroot/%_libdir"
-mv "%buildroot/%_prefix/lib"/*.a "%buildroot/%_libdir/"
+if test "%_lib" != lib; then
+	mkdir -p "%buildroot/%_libdir"
+	mv "%buildroot/%_prefix/lib"/*.a "%buildroot/%_libdir/"
+fi
 
 %files devel
 %defattr(-,root,root)