diff --git a/lang/en.json b/lang/en.json
index d6762f00..d0e60bdc 100644
--- a/lang/en.json
+++ b/lang/en.json
@@ -324,7 +324,7 @@
     },
     "detectPort": {
       "errors": {
-        "invalidPort": "Port must be between 1024 and 65535"
+        "invalidPort": "Port must be between {{ minPort }} and {{ maxPort }}"
       }
     },
     "PortManagerServer": {
@@ -337,7 +337,7 @@
         "duplicateInstance": "Failed to start PortManagerServer. An instance of PortManagerServer is already running.",
         "404": "Could not find a server with instanceId {{ instanceId }}",
         "409": "Failed to assign port. Server with instanceId {{ instanceId }} is already running on port {{ port }}",
-        "400": "Invalid port requested. Port must be between 1024 and 65535."
+        "400": "Invalid port requested. Port must be between {{ minPort }} and {{ maxPort }}."
       }
     }
   },
diff --git a/utils/PortManagerServer.ts b/utils/PortManagerServer.ts
index 7b0c9597..53f60bc5 100644
--- a/utils/PortManagerServer.ts
+++ b/utils/PortManagerServer.ts
@@ -136,7 +136,12 @@ class PortManagerServer {
         );
         return;
       } else if (port && (port < MIN_PORT_NUMBER || port > MAX_PORT_NUMBER)) {
-        res.status(400).send(i18n(`${i18nKey}.errors.400`));
+        res.status(400).send(
+          i18n(`${i18nKey}.errors.400`, {
+            minPort: MIN_PORT_NUMBER,
+            maxPort: MAX_PORT_NUMBER,
+          })
+        );
         return;
       } else {
         const promise = new Promise<{ [instanceId: string]: number }>(
diff --git a/utils/detectPort.ts b/utils/detectPort.ts
index ac48671e..24a94822 100644
--- a/utils/detectPort.ts
+++ b/utils/detectPort.ts
@@ -39,7 +39,10 @@ const i18nKey = 'utils.detectPort';
 
 export function detectPort(port?: number | null): Promise<number> {
   if (port && (port < MIN_PORT_NUMBER || port > MAX_PORT_NUMBER)) {
-    throwErrorWithMessage(`${i18nKey}.errors.invalidPort`);
+    throwErrorWithMessage(`${i18nKey}.errors.invalidPort`, {
+      minPort: MIN_PORT_NUMBER,
+      maxPort: MAX_PORT_NUMBER,
+    });
   }
 
   const portToUse = port || 0;