diff --git a/test/case/infix_dhcp/dhcp_basic/topology.svg b/test/case/infix_dhcp/dhcp_basic/topology.svg
index 168182b8..5bc27100 100644
--- a/test/case/infix_dhcp/dhcp_basic/topology.svg
+++ b/test/case/infix_dhcp/dhcp_basic/topology.svg
@@ -1,8 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
  "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<!-- Generated by graphviz version 2.43.0 (0)
- -->
+
 <!-- Title: 1x2 Pages: 1 -->
 <svg width="474pt" height="55pt"
  viewBox="0.00 0.00 474.04 55.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
diff --git a/test/test.mk b/test/test.mk
index 5285b656..5ac14555 100644
--- a/test/test.mk
+++ b/test/test.mk
@@ -38,7 +38,8 @@ test-sh:
 	$(test-dir)/env $(base) $(mode) $(binaries) -i /bin/sh
 
 test-spec:
-	@sed 's/{REPLACE}/$(subst ",,$(INFIX_NAME)) $(GIT_VERSION)/'  $(spec-dir)/Readme.adoc.in > $(spec-dir)/Readme.adoc
+	@esc_infix_name="$(echo $(INFIX_NAME) | sed 's/\//\\\//g')"; \
+	sed 's/{REPLACE}/$(subst ",,$(esc_infix_name)) $(GIT_VERSION)/'  $(spec-dir)/Readme.adoc.in > $(spec-dir)/Readme.adoc
 	@$(spec-dir)/generate_spec.py -d $(test-dir)/case -r $(BR2_EXTERNAL_INFIX_PATH)
 	@asciidoctor-pdf --failure-level INFO --theme $(spec-dir)/theme.yml -a pdf-fontsdir=$(spec-dir)/fonts -o $(test-specification) $(spec-dir)/Readme.adoc