diff --git a/novelwriter/config.py b/novelwriter/config.py
index e9fab918..6a6cf8ca 100644
--- a/novelwriter/config.py
+++ b/novelwriter/config.py
@@ -107,7 +107,7 @@ class Config:
 
         # General GUI Settings
         self.guiLocale   = self._qLocale.name()
-        self.guiTheme    = "default"        # GUI theme
+        self.guiTheme    = "default_light"  # GUI theme
         self.guiSyntax   = "default_light"  # Syntax theme
         self.guiFont     = ""               # Defaults to system default font in theme class
         self.guiFontSize = 11               # Is overridden if system default is loaded
diff --git a/tests/reference/baseConfig_novelwriter.conf b/tests/reference/baseConfig_novelwriter.conf
index 4e218943..64102f21 100644
--- a/tests/reference/baseConfig_novelwriter.conf
+++ b/tests/reference/baseConfig_novelwriter.conf
@@ -1,8 +1,8 @@
 [Meta]
-timestamp = 2024-03-25 11:57:35
+timestamp = 2024-04-13 15:41:57
 
 [Main]
-theme = default
+theme = default_light
 syntax = default_light
 font = 
 fontsize = 11