diff --git a/mesonbuild/dependencies/ui.py b/mesonbuild/dependencies/ui.py
index c877f510c..34c9fb28f 100644
--- a/mesonbuild/dependencies/ui.py
+++ b/mesonbuild/dependencies/ui.py
@@ -63,7 +63,7 @@ class GLDependency(ExternalDependency):
             candidates.append(functools.partial(PkgConfigDependency, 'gl', environment, kwargs))
 
         if DependencyMethods.SYSTEM in methods:
-            candidates.append(functools.partial(GLDependency), environment, kwargs)
+            candidates.append(functools.partial(GLDependency, environment, kwargs))
 
         return candidates