diff --git a/src/gausskernel/storage/replication/logical/worker.cpp b/src/gausskernel/storage/replication/logical/worker.cpp
index 6647249ea..0079eda34 100644
--- a/src/gausskernel/storage/replication/logical/worker.cpp
+++ b/src/gausskernel/storage/replication/logical/worker.cpp
@@ -93,7 +93,7 @@
 #include "utils/relcache.h"
 
 static const int NAPTIME_PER_CYCLE = 10; /* max sleep time between cycles (10ms) */
-static const float HALF = 0.5;
+static const double HALF = 0.5;
 
 typedef struct FlushPosition {
     dlist_node node;