diff --git a/doc/api/resources/carts.rst b/doc/api/resources/carts.rst
index fb3bcdb8b8..e42632fec9 100644
--- a/doc/api/resources/carts.rst
+++ b/doc/api/resources/carts.rst
@@ -207,7 +207,7 @@ Cart position endpoints
       POST /api/v1/organizers/bigevents/events/sampleconf/cartpositions/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "item": 1,
diff --git a/doc/api/resources/categories.rst b/doc/api/resources/categories.rst
index e379cda620..1fad90fbb8 100644
--- a/doc/api/resources/categories.rst
+++ b/doc/api/resources/categories.rst
@@ -131,7 +131,7 @@ Endpoints
       POST /api/v1/organizers/bigevents/events/sampleconf/categories/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "name": {"en": "Tickets"},
diff --git a/doc/api/resources/checkinlists.rst b/doc/api/resources/checkinlists.rst
index 6bbd6d7227..11805f3915 100644
--- a/doc/api/resources/checkinlists.rst
+++ b/doc/api/resources/checkinlists.rst
@@ -209,7 +209,7 @@ Endpoints
       POST /api/v1/organizers/bigevents/events/sampleconf/checkinlists/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "name": "VIP entry",
diff --git a/doc/api/resources/events.rst b/doc/api/resources/events.rst
index 2c40b1b834..a732ffc056 100644
--- a/doc/api/resources/events.rst
+++ b/doc/api/resources/events.rst
@@ -203,7 +203,7 @@ Endpoints
       POST /api/v1/organizers/bigevents/events/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "name": {"en": "Sample Conference"},
@@ -285,7 +285,7 @@ Endpoints
       POST /api/v1/organizers/bigevents/events/sampleconf/clone/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "name": {"en": "Sample Conference"},
@@ -362,7 +362,7 @@ Endpoints
       PATCH /api/v1/organizers/bigevents/events/sampleconf/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "plugins": [
diff --git a/doc/api/resources/item_add-ons.rst b/doc/api/resources/item_add-ons.rst
index 8439044014..b2494e1327 100644
--- a/doc/api/resources/item_add-ons.rst
+++ b/doc/api/resources/item_add-ons.rst
@@ -134,7 +134,7 @@ Endpoints
       POST /api/v1/organizers/(organizer)/events/(event)/items/(item)/addons/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "addon_category": 1,
diff --git a/doc/api/resources/item_bundles.rst b/doc/api/resources/item_bundles.rst
index a5894f93d1..1babc4bede 100644
--- a/doc/api/resources/item_bundles.rst
+++ b/doc/api/resources/item_bundles.rst
@@ -134,7 +134,7 @@ Endpoints
       POST /api/v1/organizers/(organizer)/events/(event)/items/(item)/bundles/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "bundled_item": 3,
diff --git a/doc/api/resources/item_variations.rst b/doc/api/resources/item_variations.rst
index 3ffa5d373e..6f0367dffe 100644
--- a/doc/api/resources/item_variations.rst
+++ b/doc/api/resources/item_variations.rst
@@ -152,7 +152,7 @@ Endpoints
       POST /api/v1/organizers/bigevents/events/sampleconf/items/1/variations/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "value": {"en": "Student"},
diff --git a/doc/api/resources/items.rst b/doc/api/resources/items.rst
index a6cf5db0c9..df2c69c1ef 100644
--- a/doc/api/resources/items.rst
+++ b/doc/api/resources/items.rst
@@ -342,7 +342,7 @@ Endpoints
       POST /api/v1/organizers/bigevents/events/sampleconf/items/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "id": 1,
diff --git a/doc/api/resources/questions.rst b/doc/api/resources/questions.rst
index 596ced03d4..eb3f916095 100644
--- a/doc/api/resources/questions.rst
+++ b/doc/api/resources/questions.rst
@@ -228,7 +228,7 @@ Endpoints
       POST /api/v1/organizers/bigevents/events/sampleconf/questions/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "question": {"en": "T-Shirt size"},
diff --git a/doc/api/resources/quotas.rst b/doc/api/resources/quotas.rst
index 75e4898542..3d899decf5 100644
--- a/doc/api/resources/quotas.rst
+++ b/doc/api/resources/quotas.rst
@@ -123,7 +123,7 @@ Endpoints
       POST /api/v1/organizers/bigevents/events/sampleconf/quotas/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "name": "Ticket Quota",
diff --git a/doc/api/resources/seatingplans.rst b/doc/api/resources/seatingplans.rst
index e1c46ddd53..4086f1ce1a 100644
--- a/doc/api/resources/seatingplans.rst
+++ b/doc/api/resources/seatingplans.rst
@@ -109,7 +109,7 @@ Endpoints
       POST /api/v1/organizers/bigevents/seatingplans/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "name": "Main plan",
diff --git a/doc/api/resources/subevents.rst b/doc/api/resources/subevents.rst
index fe14237964..e531f9b237 100644
--- a/doc/api/resources/subevents.rst
+++ b/doc/api/resources/subevents.rst
@@ -140,7 +140,7 @@ Endpoints
       POST /api/v1/organizers/bigevents/events/sampleconf/subevents/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "name": {"en": "First Sample Conference"},
@@ -271,7 +271,7 @@ Endpoints
       PATCH /api/v1/organizers/bigevents/events/sampleconf/subevents/1/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "name": {"en": "New Subevent Name"},
diff --git a/doc/api/resources/webhooks.rst b/doc/api/resources/webhooks.rst
index 83b1ebb4cc..1257a9e5c6 100644
--- a/doc/api/resources/webhooks.rst
+++ b/doc/api/resources/webhooks.rst
@@ -137,7 +137,7 @@ Endpoints
       POST /api/v1/organizers/bigevents/webhooks/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
-      Content: application/json
+      Content-Type: application/json
 
       {
         "enabled": true,