diff --git a/doc/manual/Makefile b/doc/manual/Makefile
index 59f3b92c7..4caabce41 100644
--- a/doc/manual/Makefile
+++ b/doc/manual/Makefile
@@ -73,8 +73,6 @@ SOURCEFIGS = \
 	${SRC}/stats/doc/Wifi-default.png \
 	${SRC}/stats/doc/dcf-overview.dia \
 	${SRC}/stats/doc/dcf-overview-with-aggregation.dia \
-	${SRC}/stats/doc/gnuplot-example.png \
-	${SRC}/stats/doc/file-example.png \
 	${SRC}/stats/doc/seventh-packet-byte-count.png \
 	${SRC}/stats/doc/gnuplot-helper-example.png \
 	${SRC}/stats/doc/gnuplot-aggregator.png \
diff --git a/src/stats/doc/dcf-overview-with-aggregation.dia b/src/stats/doc/dcf-overview-with-aggregation.dia
index ec527a530..ae2bb7b12 100644
Binary files a/src/stats/doc/dcf-overview-with-aggregation.dia and b/src/stats/doc/dcf-overview-with-aggregation.dia differ
diff --git a/src/stats/doc/dcf-overview.dia b/src/stats/doc/dcf-overview.dia
index 2146cf862..a7361bf8d 100644
Binary files a/src/stats/doc/dcf-overview.dia and b/src/stats/doc/dcf-overview.dia differ
diff --git a/src/stats/doc/file-example.png b/src/stats/doc/file-example.png
deleted file mode 100644
index b4707324b..000000000
Binary files a/src/stats/doc/file-example.png and /dev/null differ
diff --git a/src/stats/doc/gnuplot-example.png b/src/stats/doc/gnuplot-example.png
deleted file mode 100644
index 6cbef02f7..000000000
Binary files a/src/stats/doc/gnuplot-example.png and /dev/null differ