diff --git a/src/api/endpoints/posts/create.ts b/src/api/endpoints/posts/create.ts
index 15cbc4845..1c3ab5345 100644
--- a/src/api/endpoints/posts/create.ts
+++ b/src/api/endpoints/posts/create.ts
@@ -41,8 +41,8 @@ module.exports = (params, user: IUser, app) => new Promise(async (res, rej) => {
 
 	// Get 'geo' parameter
 	const [geo, geoErr] = $(params.geo).optional.nullable.strict.object()
-		.have('latitude', $().number().range(-180, 180))
-		.have('longitude', $().number().range(-90, 90))
+		.have('latitude', $().number().range(-90, 90))
+		.have('longitude', $().number().range(-180, 180))
 		.have('altitude', $().nullable.number())
 		.have('accuracy', $().nullable.number())
 		.have('altitudeAccuracy', $().nullable.number())
diff --git a/src/web/docs/api/entities/post.yaml b/src/web/docs/api/entities/post.yaml
index 451d2579d..f78026314 100644
--- a/src/web/docs/api/entities/post.yaml
+++ b/src/web/docs/api/entities/post.yaml
@@ -140,12 +140,12 @@ props:
         type: "number"
         optional: false
         desc:
-          ja: "緯度。-180〜180で表す。"
+          ja: "緯度。-90〜90で表す。"
       - name: "longitude"
         type: "number"
         optional: false
         desc:
-          ja: "経度。-90〜90で表す。"
+          ja: "経度。-180〜180で表す。"
       - name: "altitude"
         type: "number"
         optional: false