diff --git a/src/system/linux/linux.c b/src/system/linux/linux.c
index 79d1946..69269f1 100644
--- a/src/system/linux/linux.c
+++ b/src/system/linux/linux.c
@@ -26,6 +26,9 @@ void msh_write(unsigned char *st, SIZE_TYPE size) {
 }
 
 int msh_execute(unsigned char *cmd, unsigned char **args) {
+  if (*cmd == '\0') {
+    return 0;
+  }
   SIZE_TYPE fork = (SIZE_TYPE)SYSCALL(fork, 0);
   // int fork = 0;
   if (fork == 0) {