diff --git a/src/common/src/tdataformat.c b/src/common/src/tdataformat.c
index 12ea4ad78d18a5f2b09daabb71093c153d30aca7..a33da175dc9bfb52b262628f350a77a785c19058 100644
--- a/src/common/src/tdataformat.c
+++ b/src/common/src/tdataformat.c
@@ -318,7 +318,7 @@ SDataCols *tdNewDataCols(int maxRowSize, int maxCols, int maxRows) {
   pCols->maxPoints = maxRows;
   pCols->bufSize = maxRowSize * maxRows;
 
-  pCols->buf = malloc(pCols->bufSize);
+  pCols->buf = calloc(pCols->bufSize);
   if (pCols->buf == NULL) {
     free(pCols);
     return NULL;