diff --git a/src/core/operations/FromHTMLEntity.mjs b/src/core/operations/FromHTMLEntity.mjs
index a4abc159..5dae6e49 100644
--- a/src/core/operations/FromHTMLEntity.mjs
+++ b/src/core/operations/FromHTMLEntity.mjs
@@ -1047,8 +1047,6 @@ const entityToByte = {
     "rbbrk": 10099,
     "lobrk": 10214,
     "robrk": 10215,
-    "lang": 10216,
-    "rang": 10217,
     "Lang": 10218,
     "Rang": 10219,
     "loang": 10220,
@@ -1534,6 +1532,6 @@ const entityToByte = {
     "xopf": 120169,
     "yopf": 120170,
     "zopf": 120171
-  }
+};
 
 export default FromHTMLEntity;
diff --git a/src/core/operations/ToHTMLEntity.mjs b/src/core/operations/ToHTMLEntity.mjs
index f99548e0..3493c114 100644
--- a/src/core/operations/ToHTMLEntity.mjs
+++ b/src/core/operations/ToHTMLEntity.mjs
@@ -346,7 +346,6 @@ const byteToEntity = {
     730: "˚",
     731: "˛",
     732: "˜",
-    732: "˜",
     785: "̑",
     818: "_",
     913: "Α",
@@ -542,7 +541,6 @@ const byteToEntity = {
     8259: "⁃",
     8260: "⁄",
     8271: "⁏",
-    8260: "⁄",
     8279: "⁗",
     8287: " ",
     8288: "⁠",
@@ -562,7 +560,6 @@ const byteToEntity = {
     8463: "ℏ",
     8464: "ℐ",
     8465: "ℑ",
-    8465: "ℑ",
     8466: "ℒ",
     8467: "ℓ",
     8469: "ℕ",
@@ -731,7 +728,6 @@ const byteToEntity = {
     8754: "∲",
     8755: "∳",
     8756: "∴",
-    8756: "∴",
     8757: "∵",
     8758: "∶",
     8759: "∷",
@@ -768,15 +764,14 @@ const byteToEntity = {
     8791: "≗",
     8793: "≙",
     8794: "≚",
-    8796: "≜ ≜",
-    8799: "≟ ≟",
+    8796: "≜",
+    8799: "≟",
     8800: "≠",
     8801: "≡",
     8802: "≢",
     8804: "≤",
     8805: "≥",
     8806: "≦",
-    8805: "≥",
     8807: "≧",
     8808: "≨",
     8809: "≩",