diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 0eab4811ee92..d81d6a2db342 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -113,7 +113,7 @@ extern const struct cpumask *const cpu_isolated_mask;
 #define cpu_possible(cpu)	((cpu) == 0)
 #define cpu_present(cpu)	((cpu) == 0)
 #define cpu_active(cpu)		((cpu) == 0)
-#define cpu_isolated(cpu)	((cpu) == 0)
+#define cpu_isolated(cpu)	((cpu) != 0)
 #endif
 
 /* verify cpu argument to cpumask_* operators */