diff --git a/src/query/src/qHistogram.c b/src/query/src/qHistogram.c
index 6ae6ede972455ce07c657a4d215b21727c1b1db5..0d31948e59e520452605ac4577b695c53b3fad6c 100644
--- a/src/query/src/qHistogram.c
+++ b/src/query/src/qHistogram.c
@@ -174,7 +174,7 @@ int32_t tHistogramAdd(SHistogramInfo** pHisto, double val) {
       }
 
       assert((*pHisto)->elems[idx].val > val);
-    } else {
+    } else if ((*pHisto)->numOfElems > 0) {
       assert((*pHisto)->elems[(*pHisto)->numOfEntries].val < val);
     }