diff --git a/eb_hooks.py b/eb_hooks.py
index 5481dc6e..1cbcfc47 100644
--- a/eb_hooks.py
+++ b/eb_hooks.py
@@ -2873,7 +2873,7 @@ def set_maximum(parallel, max_value):
         CPU_TARGET_A64FX: (divide_by_factor, 4),
     },
     'libxc': {
-        '*': (divide_by_factor, 2),
+        '*': (set_maximum, 4),
         CPU_TARGET_A64FX: (set_maximum, 6),
     },
     'LLVM': {