diff --git a/src/perf_event/event/hardware.rs b/src/perf_event/event/hardware.rs
index 2e130e6..1c57efa 100644
--- a/src/perf_event/event/hardware.rs
+++ b/src/perf_event/event/hardware.rs
@@ -14,7 +14,7 @@ impl CacheOp {
         let id = match self {
             Read => PERF_COUNT_HW_CACHE_OP_READ,
             Write => PERF_COUNT_HW_CACHE_OP_WRITE,
-            Prefetch => PERF_COUNT_HW_CACHE_OP_WRITE,
+            Prefetch => PERF_COUNT_HW_CACHE_OP_PREFETCH,
         };
         id as _
     }