diff --git a/src/core/fonts.js b/src/core/fonts.js
index 29f186fa3..6b0eb40c6 100644
--- a/src/core/fonts.js
+++ b/src/core/fonts.js
@@ -1244,7 +1244,7 @@ class Font {
         getDingbatsGlyphsUnicode(),
         this.differences
       );
-    } else if (isStandardFont) {
+    } else if (isStandardFont || isMappedToStandardFont) {
       const map = buildToFontChar(
         this.defaultEncoding,
         getGlyphsUnicode(),
diff --git a/test/pdfs/issue18208.pdf.link b/test/pdfs/issue18208.pdf.link
new file mode 100644
index 000000000..e5d008fae
--- /dev/null
+++ b/test/pdfs/issue18208.pdf.link
@@ -0,0 +1 @@
+https://github.com/user-attachments/files/15587595/d403d5d5-f3e1-411d-b289-9b497069b80e.pdf
diff --git a/test/test_manifest.json b/test/test_manifest.json
index 8845acb99..82e0024cb 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -3012,6 +3012,15 @@
     "rounds": 1,
     "type": "text"
   },
+  {
+    "id": "issue18208",
+    "file": "pdfs/issue18208.pdf",
+    "md5": "d07311117b5cc970159b09977898996b",
+    "link": true,
+    "rounds": 1,
+    "lastPage": 1,
+    "type": "eq"
+  },
   {
     "id": "issue11139",
     "file": "pdfs/issue11139.pdf",