diff --git a/src/core/fonts.js b/src/core/fonts.js
index 6b0eb40c6382a..8dcda2a20ad51 100644
--- a/src/core/fonts.js
+++ b/src/core/fonts.js
@@ -2387,7 +2387,7 @@ class Font {
           } else {
             for (j = 0; j < n; j++) {
               b = data[i++];
-              stack.push((b << 8) | data[i++]);
+              stack.push(signedInt16(b, data[i++]));
             }
           }
         } else if (op === 0x2b && !tooComplexToFollowFunctions) {
diff --git a/test/pdfs/.gitignore b/test/pdfs/.gitignore
index fc0f6e0e8936b..0109958757154 100644
--- a/test/pdfs/.gitignore
+++ b/test/pdfs/.gitignore
@@ -668,3 +668,4 @@
 !issue18694.pdf
 !issue18693.pdf
 !bug1918115.pdf
+!bug1919513.pdf
diff --git a/test/pdfs/bug1919513.pdf b/test/pdfs/bug1919513.pdf
new file mode 100755
index 0000000000000..fa1ca32103cfb
Binary files /dev/null and b/test/pdfs/bug1919513.pdf differ
diff --git a/test/test_manifest.json b/test/test_manifest.json
index 8a9359249228e..c2eb47c18d3b9 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -10482,5 +10482,13 @@
     "rounds": 1,
     "link": true,
     "type": "eq"
+  },
+  {
+    "id": "bug1919513",
+    "file": "pdfs/bug1919513.pdf",
+    "md5": "83d1a7fab2c81e632910c334879e7334",
+    "rounds": 1,
+    "talos": false,
+    "type": "eq"
   }
 ]