diff --git a/Marlin/src/lcd/extui/anycubic/Tunes.h b/Marlin/src/lcd/extui/anycubic/Tunes.h
index a05107738d246..be8bc7223c800 100644
--- a/Marlin/src/lcd/extui/anycubic/Tunes.h
+++ b/Marlin/src/lcd/extui/anycubic/Tunes.h
@@ -61,7 +61,7 @@ n_END=10000 // end of tune marker
 
 namespace Anycubic {
 
-  void PlayTune(const uint8_t beeperPin, const uint16_t *tune, const uint8_t speed);
+  void PlayTune(const uint16_t *tune, const uint8_t speed);
 
   // Only uncomment the tunes you are using to save memory
   // This will help you write tunes!
diff --git a/Marlin/src/lcd/extui/anycubic_vyper/FileNavigator.cpp b/Marlin/src/lcd/extui/anycubic_vyper/FileNavigator.cpp
index 38603f5679153..03eba4c5b355a 100644
--- a/Marlin/src/lcd/extui/anycubic_vyper/FileNavigator.cpp
+++ b/Marlin/src/lcd/extui/anycubic_vyper/FileNavigator.cpp
@@ -40,8 +40,8 @@ using namespace ExtUI;
 
 namespace Anycubic {
 
-  FileList  FileNavigator::filelist;                          // Instance of the Marlin file API
-  char      FileNavigator::currentfoldername[MAX_PATH_LEN];   // Current folder path
+  FileList  FileNavigator::filelist;                            // Instance of the Marlin file API
+  char      FileNavigator::currentfoldername[MAX_PATH_LEN + 1]; // Current folder path
   uint16_t  FileNavigator::lastindex;
   uint8_t   FileNavigator::folderdepth;
   uint16_t  FileNavigator::currentindex;                      // override the panel request