diff --git a/qemu/target/arm/cpu.h b/qemu/target/arm/cpu.h
index 4bb5805d..a8a7d211 100644
--- a/qemu/target/arm/cpu.h
+++ b/qemu/target/arm/cpu.h
@@ -2692,7 +2692,7 @@ static inline int arm_debug_target_el(CPUARMState *env)
 
     if (arm_feature(env, ARM_FEATURE_EL2) && !secure) {
         route_to_el2 = env->cp15.hcr_el2 & HCR_TGE ||
-                       env->cp15.mdcr_el2 & (1 << 8);
+                       env->cp15.mdcr_el2 & MDCR_TDE;
     }
 
     if (route_to_el2) {