diff --git a/exercices/Makefile b/exercices/Makefile
index 9c64ae310b5aba4d5d13682795af5d5980326928..483808323da6a01bc219fed7067a73cfa69b85a9 100644
--- a/exercices/Makefile
+++ b/exercices/Makefile
@@ -8,7 +8,7 @@ PDFOPTIONS += --template=./default.latex
 
 HTMLOPTIONS += -t html5
 HTMLOPTIONS += -c ../css/tufte-css/tufte.css
-HTMLOPTIONS += ---standalone --embed-resources
+HTMLOPTIONS += --standalone --embed-resources
 HTMLOPTIONS += --mathjax=MathJax.js
 
 MD=$(wildcard *.md)
diff --git a/practical_work/Makefile b/practical_work/Makefile
index 9c64ae310b5aba4d5d13682795af5d5980326928..483808323da6a01bc219fed7067a73cfa69b85a9 100644
--- a/practical_work/Makefile
+++ b/practical_work/Makefile
@@ -8,7 +8,7 @@ PDFOPTIONS += --template=./default.latex
 
 HTMLOPTIONS += -t html5
 HTMLOPTIONS += -c ../css/tufte-css/tufte.css
-HTMLOPTIONS += ---standalone --embed-resources
+HTMLOPTIONS += --standalone --embed-resources
 HTMLOPTIONS += --mathjax=MathJax.js
 
 MD=$(wildcard *.md)
diff --git a/practical_work/electric_fl/Makefile b/practical_work/electric_fl/Makefile
index aa26e10c29f5861821bafb9e9190f1ecf35e09ad..b620ba4339f3c61c61efffe0a1e21258cd868dd9 100644
--- a/practical_work/electric_fl/Makefile
+++ b/practical_work/electric_fl/Makefile
@@ -8,7 +8,7 @@ PDFOPTIONS += --template=./default.latex
 
 HTMLOPTIONS += -t html5
 HTMLOPTIONS += -c ../../css/tufte-css/tufte.css
-HTMLOPTIONS += ---standalone --embed-resources
+HTMLOPTIONS += --standalone --embed-resources
 HTMLOPTIONS += --mathjax=MathJax.js
 
 MD=$(wildcard *.md)
diff --git a/practical_work/planets/Makefile b/practical_work/planets/Makefile
index aa26e10c29f5861821bafb9e9190f1ecf35e09ad..b620ba4339f3c61c61efffe0a1e21258cd868dd9 100644
--- a/practical_work/planets/Makefile
+++ b/practical_work/planets/Makefile
@@ -8,7 +8,7 @@ PDFOPTIONS += --template=./default.latex
 
 HTMLOPTIONS += -t html5
 HTMLOPTIONS += -c ../../css/tufte-css/tufte.css
-HTMLOPTIONS += ---standalone --embed-resources
+HTMLOPTIONS += --standalone --embed-resources
 HTMLOPTIONS += --mathjax=MathJax.js
 
 MD=$(wildcard *.md)