diff --git a/issues/Makefile b/issues/Makefile
index 15cb966..56dbf51 100644
--- a/issues/Makefile
+++ b/issues/Makefile
@@ -3,4 +3,6 @@ issue_9: ./9-transparent-image/151915768-7d6fca3b-8967-4a0b-a1b9-a1815ad5aa3a.jp
 	poetry run plotdigitizer \
 		-p 0,0 -p 80,0 -p 0,800 \
 		-l 37,-186 -l 227,-186 -l 34,-28 \
-		$< --debug --invert-image
+		--debug --invert-image \
+		--plot-file issue7.png \
+		$< 
diff --git a/issues/issue7.png b/issues/issue7.png
new file mode 100644
index 0000000..210e982
Binary files /dev/null and b/issues/issue7.png differ