diff --git a/kernel/shell.c b/kernel/shell.c
index 1b314545..cd5bdb8c 100644
--- a/kernel/shell.c
+++ b/kernel/shell.c
@@ -17,7 +17,7 @@ char    shellbuffer[512];
 
 #include <metalsvm/stdio.h>
 
-#define SHELLDEBUGPRINTF(x,...) ksprintf(shellbuffer,x,##__VA_ARGS__);shelldebugprint(shellbuffer);
+#define SHELLDEBUGPRINTF(x,...) ksnprintf(shellbuffer,sizeof(shellbuffer),x,##__VA_ARGS__);shelldebugprint(shellbuffer);
 
 void shelldebugprint(char* x)
 {