diff --git a/15-draft.json b/15-draft.json
index 18581f8..127e7f7 100644
--- a/15-draft.json
+++ b/15-draft.json
@@ -106,10 +106,15 @@
           "minItems": 1
         }
       },
-      "required": [
-        "lat",
-        "lon"
-      ]
+      "minProperties": 1,
+      "dependentRequired": {
+        "lat": [
+          "lon"
+        ],
+        "lon": [
+          "lat"
+        ]
+      }
     },
     "spacefed": {
       "description": "A flag indicating if the hackerspace uses SpaceFED, a federated login scheme so that visiting hackers can use the space WiFi with their home space credentials.",
diff --git a/CHANGELOG.md b/CHANGELOG.md
index db76468..08e415a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,8 @@ Root level:
 - [added] The `areas` field was added ([#107])
 - [added] The `hint` field was added ([#102])
 - [changed] Make entire `location` field optional to enable the inclusion of groups without physical location ([#106])
+- [changed] If the `location` field is present, it requires at least 1 property ([#115])
+- [changed] Make the `lat`/`lon` fields optional, but if one of them is provided, then the other one must be provided too ([#115])
 
 `sensors`:
 
@@ -115,3 +117,4 @@ Root level:
 [#106]: https://github.com/SpaceApi/schema/pull/106
 [#108]: https://github.com/SpaceApi/schema/pull/108
 [#107]: https://github.com/SpaceApi/schema/pull/107
+[#115]: https://github.com/SpaceApi/schema/pull/115