diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c
index e859d23..1b65907 100644
--- a/drivers/oprofile/cpu_buffer.c
+++ b/drivers/oprofile/cpu_buffer.c
@@ -258,7 +258,7 @@
 	sample->event = flags;
 
 	if (size)
-		sample->data[0] = (unsigned long)task;
+		op_cpu_buffer_add_data(&entry, (unsigned long)task);
 
 	op_cpu_buffer_write_commit(&entry);