diff --git a/configfile.c b/configfile.c
index 83f2a0c4..2d66008d 100644
--- a/configfile.c
+++ b/configfile.c
@@ -2250,6 +2250,7 @@ print_event_notification_list(EventNotificationList *list)
 	PQExpBufferData buf;
 	char *ptr;
 	EventNotificationListCell *cell;
+	int ptr_len;
 
 	initPQExpBuffer(&buf);
 	cell = list->head;
@@ -2264,8 +2265,10 @@ print_event_notification_list(EventNotificationList *list)
 		cell = cell->next;
 	}
 
-	ptr = palloc0(strlen(buf.data) + 1);
-	strncpy(ptr, buf.data, strlen(buf.data));
+	ptr_len = strlen(buf.data);
+	ptr = palloc0(ptr_len + 1);
+
+	strncpy(ptr, buf.data, ptr_len);
 
 	termPQExpBuffer(&buf);
 
diff --git a/repmgr-action-standby.c b/repmgr-action-standby.c
index 8bd64c61..1d80e8da 100644
--- a/repmgr-action-standby.c
+++ b/repmgr-action-standby.c
@@ -7773,7 +7773,9 @@ static void
 tablespace_data_append(TablespaceDataList *list, const char *name, const char *oid, const char *location)
 {
 	TablespaceDataListCell *cell = NULL;
-
+	int oid_len = strlen(oid);
+	int name_len = strlen(name);
+	int location_len = strlen(location);
 	cell = (TablespaceDataListCell *) pg_malloc0(sizeof(TablespaceDataListCell));
 
 	if (cell == NULL)
@@ -7782,13 +7784,13 @@ tablespace_data_append(TablespaceDataList *list, const char *name, const char *o
 		exit(ERR_OUT_OF_MEMORY);
 	}
 
-	cell->oid = pg_malloc(1 + strlen(oid));
-	cell->name = pg_malloc(1 + strlen(name));
-	cell->location = pg_malloc(1 + strlen(location));
+	cell->oid = pg_malloc0(1 + oid_len);
+	cell->name = pg_malloc0(1 + name_len);
+	cell->location = pg_malloc0(1 + location_len);
 
-	strncpy(cell->oid, oid, 1 + strlen(oid));
-	strncpy(cell->name, name, 1 + strlen(name));
-	strncpy(cell->location, location, 1 + strlen(location));
+	strncpy(cell->oid, oid, oid_len);
+	strncpy(cell->name, name, name_len);
+	strncpy(cell->location, location, location_len);
 
 	if (list->tail)
 		list->tail->next = cell;