diff --git a/src/core/fonts.js b/src/core/fonts.js
index 4f24b109f..5cea7df89 100644
--- a/src/core/fonts.js
+++ b/src/core/fonts.js
@@ -5880,7 +5880,7 @@ var CFFParser = (function CFFParserClosure() {
           if ((c < 33 || c > 126) || c === 91 /* [ */ || c === 93 /* ] */ ||
               c === 40 /* ( */ || c === 41 /* ) */ || c === 123 /* { */ ||
               c === 125 /* } */ || c === 60 /* < */ || c === 62 /* > */ ||
-              c === 47 /* / */ || c === 37 /* % */) {
+              c === 47 /* / */ || c === 37 /* % */ || c === 35 /* # */) {
             data[j] = 95;
             continue;
           }