diff --git a/arch/powerpc/kernel/dt_cpu_ftrs.c b/arch/powerpc/kernel/dt_cpu_ftrs.c
index 9d6e833da2bdcbba8b6d86d9ad1bf926adbc2320..a0edeb391e3e49969c2b6665095570ba70ddc1ac 100644
--- a/arch/powerpc/kernel/dt_cpu_ftrs.c
+++ b/arch/powerpc/kernel/dt_cpu_ftrs.c
@@ -678,7 +678,7 @@ static void __init cpufeatures_setup_start(u32 isa)
 		cur_cpu_spec->cpu_user_features2 |= PPC_FEATURE2_ARCH_3_00;
 	}
 
-	if (isa >= 3100) {
+	if (isa >= ISA_V3_1) {
 		cur_cpu_spec->cpu_features |= CPU_FTR_ARCH_31;
 		cur_cpu_spec->cpu_user_features2 |= PPC_FEATURE2_ARCH_3_1;
 	}