diff --git a/src/main.c b/src/main.c
index c9b4235..d4bce3c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -11,15 +11,16 @@ MSH_ENTRY_POINT {
 
   while (1) {
     int out;
-    char *buf = msh_callocate(2048, sizeof(char));
+    char *buf = msh_callocate(512, sizeof(char));
     int i = 0, n = 0, last = 0;
     SIZE_TYPE sz = 0, leftoff = 0;
 
     msh_print_strings(msh_working_directory(), " %> ", 0);
 
-    while ((out = msh_read_input(buf, &sz, 2048)), out != -1) {
+    while ((out = msh_read_input(buf, &sz, 512)), out != -1) {
       switch (out) {
-        /* backspace */
+      /* backspace (also do this when we run out of space) */
+      case -2:
       case 0x7F:
         if (sz > 0) {
           msh_move_cursor(-1);