diff --git a/api/apisettings.php b/api/apisettings.php
index 0c4e0b0..57759a0 100644
--- a/api/apisettings.php
+++ b/api/apisettings.php
@@ -41,24 +41,24 @@ $APIS = [
         "load" => "submitcode.php",
         "vars" => [
             "code" => "string",
-            "latitude (optional)" => "/[0-9]{0,3}\.[0-9]{2,10}/",
-            "longitude (optional)" => "/[0-9]{0,3}\.[0-9]{2,10}/",
+            "latitude (optional)" => "/^-?[0-9]{1,2}\.[0-9]*$/",
+            "longitude (optional)" => "/^-?[0-9]{1,3}\.[0-9]*$/",
             "accuracy (optional)" => "numeric"
         ]
     ],
     "nearbyplayers" => [
         "load" => "nearbyplayers.php",
         "vars" => [
-            "latitude" => "/[0-9]{0,3}\.[0-9]{2,10}/",
-            "longitude" => "/[0-9]{0,3}\.[0-9]{2,10}/",
+            "latitude" => "/^-?[0-9]{1,2}\.[0-9]*$/",
+            "longitude" => "/^-?[0-9]{1,3}\.[0-9]*$/",
             "radius (optional)" => "numeric"
         ]
     ],
     "nearbyplaces" => [
         "load" => "nearbyplaces.php",
         "vars" => [
-            "latitude" => "/[0-9]{0,3}\.[0-9]{2,10}/",
-            "longitude" => "/[0-9]{0,3}\.[0-9]{2,10}/",
+            "latitude" => "/^-?[0-9]{1,2}\.[0-9]*$/",
+            "longitude" => "/^-?[0-9]{1,3}\.[0-9]*$/",
             "radius (optional)" => "numeric"
         ]
     ],
@@ -77,16 +77,16 @@ $APIS = [
     "getchat" => [
         "load" => "getchat.php",
         "vars" => [
-            "latitude (optional)" => "/[0-9]{0,3}\.[0-9]{2,10}/",
-            "longitude (optional)" => "/[0-9]{0,3}\.[0-9]{2,10}/",
+            "latitude (optional)" => "/^-?[0-9]{1,2}\.[0-9]*$/",
+            "longitude (optional)" => "/^-?[0-9]{1,3}\.[0-9]*$/",
             "radius (optional)" => "numeric"
         ]
     ],
     "sendchat" => [
         "load" => "sendchat.php",
         "vars" => [
-            "latitude" => "/[0-9]{0,3}\.[0-9]{2,10}/",
-            "longitude" => "/[0-9]{0,3}\.[0-9]{2,10}/",
+            "latitude" => "/^-?[0-9]{1,2}\.[0-9]*$/",
+            "longitude" => "/^-?[0-9]{1,3}\.[0-9]*$/",
             "message" => "string"
         ]
     ],