diff --git a/Makefile b/Makefile
index b71deadf589111c46e040823b66fa506948c5fd4..875bc39f7e09aa364180d563168ba2207063bf72 100644
--- a/Makefile
+++ b/Makefile
@@ -56,7 +56,7 @@ develop:
 update-requirements:
 	pip-compile requirements.in
 	pip-compile dev-requirements.in
-	sed -i '' -e 's|-c .*requirements.txt|-c requirements.txt|' dev-requirements.txt
+	sed -i -e 's|-c .*requirements.txt|-c requirements.txt|' dev-requirements.txt
 	pip-compile doc-requirements.in
 
 # Met à niveau les versions de toutes les dépendances.
@@ -66,7 +66,7 @@ update-requirements:
 upgrade-requirements:
 	pip-compile --upgrade requirements.in
 	pip-compile --upgrade dev-requirements.in
-	sed -i '' -e 's|-c .*requirements.txt|-c requirements.txt|' dev-requirements.txt
+	sed -i -e 's|-c .*requirements.txt|-c requirements.txt|' dev-requirements.txt
 	pip-compile --upgrade doc-requirements.in
 
 # Exécute les tests.