diff --git a/src/training/stringrenderer.cpp b/src/training/stringrenderer.cpp
index 2e4e9b5b96d84498918429e6f4e64642f0c5f31b..67279edb21ab1e1268deb2dd545ade2697ca65f4 100644
--- a/src/training/stringrenderer.cpp
+++ b/src/training/stringrenderer.cpp
@@ -120,6 +120,7 @@ StringRenderer::StringRenderer(const std::string& font_desc, int page_width,
       font_index_(0),
       last_offset_(0) {
   set_resolution(kDefaultOutputResolution);
+  set_font(font_desc);
 }
 
 bool StringRenderer::set_font(const std::string& desc) {