diff --git a/arch/x86/kernel/entry.asm b/arch/x86/kernel/entry.asm
index 84d41d39..8941848e 100644
--- a/arch/x86/kernel/entry.asm
+++ b/arch/x86/kernel/entry.asm
@@ -501,7 +501,9 @@ extern scheduler
 global reschedule
 reschedule:
     cli
-    pusha
+    ; eax could change across a function call
+    ; => we have not to save the original eax value
+    push ebx 
 
     push DWORD [current_task]
     call scheduler
@@ -519,7 +521,7 @@ hack1:
     jmp 0x00 : 0xDEADBEAF
 
 no_task_switch1:
-    popa
+    pop ebx
     sti
     ret