diff --git a/kaleid/kernel/po/shtdwn.c b/kaleid/kernel/po/shtdwn.c
index 6cf2f39..88c6b49 100644
--- a/kaleid/kernel/po/shtdwn.c
+++ b/kaleid/kernel/po/shtdwn.c
@@ -29,7 +29,7 @@ noreturn void PoShutdownQemu(void)
 {
     KernLog("\nShutdown QEMU at %s...\n", KeFormatCurTime());
 
-    KeDelayExecution(1000);
+    KeSleep(1000);
 
     IoWriteWordOnPort(0x604, 0x2000);
     
@@ -41,7 +41,7 @@ noreturn void PoShutdownVirtualbox(void)
 {
     KernLog("\nShutdown VirtualBox at %s...\n", KeFormatCurTime());
 
-    KeDelayExecution(1000);
+    KeSleep(1000);
 
     IoWriteWordOnPort(0x4004, 0x3400);
     
@@ -53,7 +53,7 @@ noreturn void PoShutdownBochs(void)
 {
     KernLog("\nShutdown Bochs at %s...\n", KeFormatCurTime());
 
-    KeDelayExecution(1000);
+    KeSleep(1000);
 
     IoWriteWordOnPort(0xB004, 0x2000);
     
@@ -65,4 +65,3 @@ noreturn void PoShutdown(void)
 {
     PoShutdownQemu();
 }
-
diff --git a/kaleid/kernel/sh/shcmds.c b/kaleid/kernel/sh/shcmds.c
index 93b2718..14247b4 100644
--- a/kaleid/kernel/sh/shcmds.c
+++ b/kaleid/kernel/sh/shcmds.c
@@ -177,7 +177,7 @@ error_t CmdFloat(int argc, char **argv, char *cmdline)
     KernLog("dec(b) = ");
 
     for(double i = 0; i < param; i++) {
-        dec = (((b*param) - (b_ent*param)) * 10.0 * i / param);
+        dec = ;
         KernLog("%d", (ulong)dec);
     }
 
diff --git a/kaleid/libbuf/bgetc.c b/kaleid/libbuf/bgetc.c
index 2da4e7b..2bd60da 100644
--- a/kaleid/libbuf/bgetc.c
+++ b/kaleid/libbuf/bgetc.c
@@ -72,7 +72,7 @@ error_t bgetc(Buffer_t *buf, uchar *ch)
         // (so that BStdIn works; don't make anything else)
         while (buf->rp >= buf->wp) {
 #ifdef _KALEID_KERNEL
-            KeDelayExecution(1);
+            KeSleep(1);
 #endif
         }