diff --git a/src/backend/commands/copyfrom.c b/src/backend/commands/copyfrom.c
index 80bca79cd0..b47cb5c66d 100644
--- a/src/backend/commands/copyfrom.c
+++ b/src/backend/commands/copyfrom.c
@@ -1609,6 +1609,7 @@ BeginCopyFrom(ParseState *pstate,
 		}
 	}
 
+	cstate->defaults = (bool *) palloc0(tupDesc->natts * sizeof(bool));
 
 	/* initialize progress */
 	pgstat_progress_start_command(PROGRESS_COMMAND_COPY,
diff --git a/src/backend/commands/copyfromparse.c b/src/backend/commands/copyfromparse.c
index d2e8c74402..232768a6e1 100644
--- a/src/backend/commands/copyfromparse.c
+++ b/src/backend/commands/copyfromparse.c
@@ -871,7 +871,7 @@ NextCopyFrom(CopyFromState cstate, ExprContext *econtext,
 	/* Initialize all values for row to NULL */
 	MemSet(values, 0, num_phys_attrs * sizeof(Datum));
 	MemSet(nulls, true, num_phys_attrs * sizeof(bool));
-	cstate->defaults = (bool *) palloc0(num_phys_attrs * sizeof(bool));
+	MemSet(cstate->defaults, false, num_phys_attrs * sizeof(bool));
 
 	if (!cstate->opts.binary)
 	{
@@ -1040,8 +1040,6 @@ NextCopyFrom(CopyFromState cstate, ExprContext *econtext,
 										 &nulls[defmap[i]]);
 	}
 
-	pfree(cstate->defaults);
-
 	return true;
 }