diff --git a/libs/fonts/source/freetype.cpp b/libs/fonts/source/freetype.cpp
index f27dead1..373636fe 100644
--- a/libs/fonts/source/freetype.cpp
+++ b/libs/fonts/source/freetype.cpp
@@ -185,6 +185,9 @@ namespace psemek::fonts
 					else
 					{
 						glyph_id = FT_Get_Char_Index(face, ch);
+						if (glyph_id == 0)
+							glyph_id = FT_Get_Char_Index(face, '?');
+
 						glyph_mapping_[ch] = glyph_id;
 					}