diff --git a/src/gausskernel/optimizer/util/plancat.cpp b/src/gausskernel/optimizer/util/plancat.cpp
index e7d8b9ada..77d7cc285 100755
--- a/src/gausskernel/optimizer/util/plancat.cpp
+++ b/src/gausskernel/optimizer/util/plancat.cpp
@@ -1971,7 +1971,7 @@ void estimatePartitionSize(
      * pages added since the last VACUUM are most likely not marked
      * all-visible.  But costsize.c wants it converted to a fraction.
      */
-    if (partitionallvisible == 0 || curpages <= 0) {
+    if (partitionallvisible == 0 || curpages == 0) {
         *allvisfrac = 0;
     } else if ((double)partitionallvisible >= curpages) {
         *allvisfrac = 1;