diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index a61e4de..53230e9 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -215,14 +215,12 @@
 		__u32		wakeup_watermark; /* bytes before wakeup   */
 	};
 
-	union {
-		struct { /* Hardware breakpoint info */
-			__u64		bp_addr;
-			__u32		bp_type;
-			__u32		bp_len;
-			__u64		__bp_reserved_1;
-			__u64		__bp_reserved_2;
-		};
+	struct { /* Hardware breakpoint info */
+		__u64		bp_addr;
+		__u32		bp_type;
+		__u32		bp_len;
+		__u64		__bp_reserved_1;
+		__u64		__bp_reserved_2;
 	};
 
 	__u32			__reserved_2;