diff --git a/src/Ryujinx/Headless/HeadlessRyujinx.cs b/src/Ryujinx/Headless/HeadlessRyujinx.cs
index 7fe207274..c3d903cf1 100644
--- a/src/Ryujinx/Headless/HeadlessRyujinx.cs
+++ b/src/Ryujinx/Headless/HeadlessRyujinx.cs
@@ -161,7 +161,7 @@ namespace Ryujinx.Headless
             {
                 configurationPath = appDataConfigurationPath;
             }
-            else if (File.Exists(customConfigPath))
+            else if (customConfigPath != null && File.Exists(customConfigPath))
             {
                 configurationPath = customConfigPath;
             }