diff --git a/src/core/standard_fonts.js b/src/core/standard_fonts.js
index 63fe68e6b..294509f0c 100644
--- a/src/core/standard_fonts.js
+++ b/src/core/standard_fonts.js
@@ -763,18 +763,21 @@ const getSupplementalGlyphMapForArialBlack = getLookupTableFactory(function (
 const getSupplementalGlyphMapForCalibri = getLookupTableFactory(function (t) {
   t[1] = 32;
   t[4] = 65;
+  t[5] = 192;
   t[6] = 193;
   t[17] = 66;
   t[18] = 67;
   t[21] = 268;
   t[24] = 68;
   t[28] = 69;
+  t[29] = 200;
   t[30] = 201;
   t[32] = 282;
   t[38] = 70;
   t[39] = 71;
   t[44] = 72;
   t[47] = 73;
+  t[48] = 204;
   t[49] = 205;
   t[58] = 74;
   t[60] = 75;
@@ -782,6 +785,7 @@ const getSupplementalGlyphMapForCalibri = getLookupTableFactory(function (t) {
   t[68] = 77;
   t[69] = 78;
   t[75] = 79;
+  t[76] = 210;
   t[87] = 80;
   t[89] = 81;
   t[90] = 82;
@@ -798,6 +802,7 @@ const getSupplementalGlyphMapForCalibri = getLookupTableFactory(function (t) {
   t[127] = 90;
   t[129] = 381;
   t[258] = 97;
+  t[259] = 224;
   t[260] = 225;
   t[268] = 261;
   t[271] = 98;
@@ -806,6 +811,7 @@ const getSupplementalGlyphMapForCalibri = getLookupTableFactory(function (t) {
   t[275] = 269;
   t[282] = 100;
   t[286] = 101;
+  t[287] = 232;
   t[288] = 233;
   t[290] = 283;
   t[295] = 281;
@@ -813,6 +819,7 @@ const getSupplementalGlyphMapForCalibri = getLookupTableFactory(function (t) {
   t[336] = 103;
   t[346] = 104;
   t[349] = 105;
+  t[350] = 236;
   t[351] = 237;
   t[361] = 106;
   t[364] = 107;
@@ -821,6 +828,7 @@ const getSupplementalGlyphMapForCalibri = getLookupTableFactory(function (t) {
   t[373] = 109;
   t[374] = 110;
   t[381] = 111;
+  t[382] = 242;
   t[383] = 243;
   t[393] = 112;
   t[395] = 113;
diff --git a/test/pdfs/.gitignore b/test/pdfs/.gitignore
index 69d37a951..74ad3ec29 100644
--- a/test/pdfs/.gitignore
+++ b/test/pdfs/.gitignore
@@ -470,6 +470,7 @@
 !issue11656.pdf
 !annotation-fileattachment.pdf
 !annotation-text-widget.pdf
+!issue15443.pdf
 !annotation-choice-widget.pdf
 !issue10900.pdf
 !annotation-button-widget.pdf
diff --git a/test/pdfs/issue15443.pdf b/test/pdfs/issue15443.pdf
new file mode 100644
index 000000000..c909baa55
--- /dev/null
+++ b/test/pdfs/issue15443.pdf
@@ -0,0 +1,102 @@
+%PDF-1.7
+12 0 obj
+<<
+/Type /Catalog
+/Pages 13 0 R
+>>
+endobj
+13 0 obj
+<<
+/Type /Pages
+/MediaBox [ 0 0 200 50 ]
+/Count 1
+/Kids [ 14 0 R ]
+>>
+endobj
+14 0 obj
+<<
+/Type /Page
+/Parent 13 0 R
+/Resources <<
+/Font <<
+/F1 15 0 R
+>>
+>>
+/Contents 16 0 R
+>>
+endobj
+15 0 obj
+<<
+/Type /Font
+/Subtype /Type0
+/BaseFont /Calibri
+/Encoding /Identity-H
+/DescendantFonts [ 8 0 R ]
+>>
+endobj
+16 0 obj
+<<
+/Length 75
+>>
+stream
+BT
+10 20 TD
+/F1 20 Tf
+<001e001d0005004c003000010120011f0103017e015e> Tj
+ET
+
+endstream
+
+endobj
+8 0 obj
+<<
+/Type /Font
+/Subtype /CIDFontType2
+/BaseFont /Calibri
+/CIDSystemInfo <<
+/Registry (Adobe)
+/Ordering (Identity)
+/Supplement 0
+>>
+/W [ 259 [ 479.004 ] 287 [ 497.559 ] 288 [ 497.559 ] 350 [ 229.492 ] 382 [ 527.344 ] ]
+/FontDescriptor 9 0 R
+>>
+endobj
+9 0 obj
+<<
+/Type /FontDescriptor
+/Ascent 750
+/CapHeight 0
+/Descent -250
+/Flags 32
+/FontBBox [ -503 -312 1240 1026 ]
+/FontName /Calibri
+/ItalicAngle 0
+/StemV 0
+>>
+endobj
+xref
+0 1
+0000000000 65535 f
+8 1
+0000000497 00000 n
+9 1
+0000000755 00000 n
+12 1
+0000000009 00000 n
+13 1
+0000000060 00000 n
+14 1
+0000000146 00000 n
+15 1
+0000000252 00000 n
+16 1
+0000000370 00000 n
+trailer
+<<
+/Size 7
+/Root 12 0 R
+>>
+startxref
+924
+%%EOF
\ No newline at end of file
diff --git a/test/test_manifest.json b/test/test_manifest.json
index 0342eb23d..490aa38c4 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -1827,6 +1827,12 @@
        "link": false,
        "type": "eq"
     },
+    {  "id": "issue15443",
+       "file": "pdfs/issue15443.pdf",
+       "md5": "95a9e28b3f2754aa310f3379e01d781d",
+       "rounds": 1,
+       "type": "eq"
+    },
     {  "id": "issue5946",
        "file": "pdfs/issue5946.pdf",
        "md5": "1217a3c8e2ee4ceb96d85a2f27e437b4",