diff --git a/kernel/inthndlr.c b/kernel/inthndlr.c
index 3d0c90e..456ed5d 100644
--- a/kernel/inthndlr.c
+++ b/kernel/inthndlr.c
@@ -467,8 +467,10 @@ dispatch:
 
       lr.AL = 0x00;
       r->FLAGS |= FLG_ZERO;
-      if (StdinBusy())
+      if (StdinBusy()) {
+        DosIdle_int();
         break;
+      }
 
       r->FLAGS &= ~FLG_ZERO;
       /* fall through */