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-rw-r--r--luaotfload.dtx4
1 files changed, 3 insertions, 1 deletions
diff --git a/luaotfload.dtx b/luaotfload.dtx
index 567cd37..86c5b8d 100644
--- a/luaotfload.dtx
+++ b/luaotfload.dtx
@@ -746,7 +746,9 @@ local function colorize(head)
end
local function finalize(head)
- tex.pdfpageresources = format("%s\n/ExtGState<<%s>>", tex.pdfpageresources, res)
+ if res then
+ tex.pdfpageresources = format("%s\n/ExtGState<<%s>>", tex.pdfpageresources, res)
+ end
return head
end