diff --git a/target/arm/cpu-features.h b/target/arm/cpu-features.h
index 954d358..165a497 100644
--- a/target/arm/cpu-features.h
+++ b/target/arm/cpu-features.h
@@ -771,7 +771,7 @@
 
 static inline bool isar_feature_aa64_tidcp1(const ARMISARegisters *id)
 {
-    return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR1, TIDCP1) != 0;
+    return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, TIDCP1) != 0;
 }
 
 static inline bool isar_feature_aa64_hafs(const ARMISARegisters *id)