diff --git a/src/core/TextFontMetrics.js b/src/core/TextFontMetrics.js
index 7216fe4..425c5f6 100644
--- a/src/core/TextFontMetrics.js
+++ b/src/core/TextFontMetrics.js
@@ -49,7 +49,8 @@ function calcCharAdvanceOpenType(char, fontSize, font, unitsPerEm) {
   let glyph = font.charToGlyph(char)
   return glyph.unicode ?
     glyph.advanceWidth * calcFontScale(fontSize, unitsPerEm) :
-    0
+    // font doesn't contain a glyph for this char, fallback to canvas measurement
+    calcTextAdvanceCanvas(char, fontSize, font)
 }
 
 let canvas = _.memoize(function() {