diff --git a/arch/x86/include/asm/amd-ibs.h b/arch/x86/include/asm/amd-ibs.h
index 46e1df45efc04..aabdbb5ab9200 100644
--- a/arch/x86/include/asm/amd-ibs.h
+++ b/arch/x86/include/asm/amd-ibs.h
@@ -49,7 +49,7 @@ union ibs_op_ctl {
 	};
 };
 
-/* MSR 0xc0011035: IBS Op Data 2 */
+/* MSR 0xc0011035: IBS Op Data 1 */
 union ibs_op_data {
 	__u64 val;
 	struct {
diff --git a/tools/arch/x86/include/asm/amd-ibs.h b/tools/arch/x86/include/asm/amd-ibs.h
index 174e7d83fcbdb..765e9e752d038 100644
--- a/tools/arch/x86/include/asm/amd-ibs.h
+++ b/tools/arch/x86/include/asm/amd-ibs.h
@@ -49,7 +49,7 @@ union ibs_op_ctl {
 	};
 };
 
-/* MSR 0xc0011035: IBS Op Data 2 */
+/* MSR 0xc0011035: IBS Op Data 1 */
 union ibs_op_data {
 	__u64 val;
 	struct {