diff --git a/kandinsky/Makefile b/kandinsky/Makefile
index f0fe6fd2e..582c30977 100644
--- a/kandinsky/Makefile
+++ b/kandinsky/Makefile
@@ -49,7 +49,7 @@ define raster_font
 $(call rule_for, \
   RASTER, \
   kandinsky/fonts/$(1).cpp, \
-  kandinsky/fonts/$(1).otf $$(RASTERIZER), \
+  kandinsky/fonts/$(1).ttf $$(RASTERIZER), \
   $$(RASTERIZER) $$< $(2) $(2) $(3) $(4) $(1) $$@ $(if $(HAS_LIBPNG),$$(basename $$@).png) \
 )
 endef
diff --git a/kandinsky/fonts/LargeFont.otf b/kandinsky/fonts/LargeFont.otf
deleted file mode 100644
index 1e6c616ea..000000000
Binary files a/kandinsky/fonts/LargeFont.otf and /dev/null differ
diff --git a/kandinsky/fonts/LargeFont.ttf b/kandinsky/fonts/LargeFont.ttf
new file mode 100644
index 000000000..7a88c8dc6
Binary files /dev/null and b/kandinsky/fonts/LargeFont.ttf differ
diff --git a/kandinsky/fonts/SmallFont.otf b/kandinsky/fonts/SmallFont.otf
deleted file mode 100644
index 43e3c0e56..000000000
Binary files a/kandinsky/fonts/SmallFont.otf and /dev/null differ
diff --git a/kandinsky/fonts/SmallFont.ttf b/kandinsky/fonts/SmallFont.ttf
new file mode 100644
index 000000000..97e426fc9
Binary files /dev/null and b/kandinsky/fonts/SmallFont.ttf differ