Two different SYMBOLs from one ENSEMBL ID

[shitiezhu]

when I use clusterProfiler::bitr("ENSG00000099977", "ENSEMBL", "SYMBOL", OrgDb = "org.Hs.eg.db"), I got

ENSEMBL SYMBOL 1 ENSG00000099977 DDT 2 ENSG00000099977 DDTL

However, ENSG00000099977 is for DDT but not DDTL. The ENSEMBL ID for DDTL is ENSG00000099974. How can I fix it?