diff --git a/kernel/trunk/fs/fat.inc b/kernel/trunk/fs/fat.inc
index b10550eb89..ea04fc03cd 100644
--- a/kernel/trunk/fs/fat.inc
+++ b/kernel/trunk/fs/fat.inc
@@ -1920,7 +1920,7 @@ fat_Read:
         jnz     .noaccess3
         pop     ecx
         xor     edx, edx
-        jcxz    .done
+        jecxz   .done
         jmp     .alignedCluster
 .readEnd:
         add     ecx, edi
diff --git a/kernel/trunk/gui/font.inc b/kernel/trunk/gui/font.inc
index e4d2913110..de566fea17 100644
--- a/kernel/trunk/gui/font.inc
+++ b/kernel/trunk/gui/font.inc
@@ -241,7 +241,7 @@ deltaToScreen = 28
 .drawPicture:
         mov     eax, -1
         repz scasd
-        jcxz    @f
+        jecxz   @f
         mov     eax, edx
         sub     eax, ecx
         push    ecx