diff --git a/src/util/glsl2spirv.py b/src/util/glsl2spirv.py
index f11bf612cb1..8b765c987eb 100644
--- a/src/util/glsl2spirv.py
+++ b/src/util/glsl2spirv.py
@@ -129,7 +129,7 @@ def process_file(args):
 
         cmd_list = ["glslangValidator"]
 
-        if args.Olib is not None:
+        if args.Olib:
             cmd_list += ["--keep-uncalled"]
 
         if args.vn is not None: