diff --git a/tools/vsh.c b/tools/vsh.c
index 1aa8f5bc9d095a9b52a18c4c7504d8bc27141596..e57c32466084281e6e1cc6621cb77ddf532a1faa 100644
--- a/tools/vsh.c
+++ b/tools/vsh.c
@@ -2680,7 +2680,7 @@ vshReadline(vshControl *ctl, const char *prompt)
 /*
  * Initialize debug settings.
  */
-void
+static void
 vshInitDebug(vshControl *ctl)
 {
     const char *debugEnv;
diff --git a/tools/vsh.h b/tools/vsh.h
index b6876048cbd9187fd3be01c84337f6324336650b..d4e9710524ad7ffc28fd3ade736557bd594414ea 100644
--- a/tools/vsh.h
+++ b/tools/vsh.h
@@ -305,7 +305,6 @@ void vshPrintExtra(vshControl *ctl, const char *format, ...)
 bool vshInit(vshControl *ctl, const vshCmdGrp *groups, const vshCmdDef *set);
 bool vshInitReload(vshControl *ctl);
 void vshDeinit(vshControl *ctl);
-void vshInitDebug(vshControl *ctl);
 void vshDebug(vshControl *ctl, int level, const char *format, ...)
     ATTRIBUTE_FMT_PRINTF(3, 4);