diff --git a/GRRLIB/GRRLIB/GRRLIB_gecko.c b/GRRLIB/GRRLIB/GRRLIB_gecko.c
index 6d353e4..3c150c2 100644
--- a/GRRLIB/GRRLIB/GRRLIB_gecko.c
+++ b/GRRLIB/GRRLIB/GRRLIB_gecko.c
@@ -28,6 +28,7 @@ static bool geckoinit = false;
 
 /**
  * Initialize USB Gecko.
+ * @return bool true=everything worked, false=problems occurred.
  */
 bool GRRLIB_GeckoInit() {
     u32 geckoattached = usb_isgeckoalive(EXI_CHANNEL_1);
diff --git a/grrlib.doxygen b/grrlib.doxygen
index bdeeb77..5e672f9 100644
--- a/grrlib.doxygen
+++ b/grrlib.doxygen
@@ -1,4 +1,4 @@
-# Doxyfile 1.8.12
+# Doxyfile 1.8.13
 
 # This file describes the settings to be used by the documentation system
 # doxygen (www.doxygen.org) for a project.
@@ -2381,6 +2381,11 @@ DIAFILE_DIRS           =
 
 PLANTUML_JAR_PATH      = 
 
+# When using plantuml, the PLANTUML_CFG_FILE tag can be used to specify a
+# configuration file for plantuml.
+
+PLANTUML_CFG_FILE      = 
+
 # When using plantuml, the specified paths are searched for files specified by
 # the !include statement in a plantuml block.