diff --git a/src/stub/src/amd64-linux.elf-entry.S b/src/stub/src/amd64-linux.elf-entry.S
index 765a3e45..b17f03df 100644
--- a/src/stub/src/amd64-linux.elf-entry.S
+++ b/src/stub/src/amd64-linux.elf-entry.S
@@ -241,7 +241,7 @@ unfold:
 */
         .byte 0x68; .int JMPU   // push $ JMPU (R_X86_64_32)
         push %rax    // for unmap in fold
-        .byte 0x68; .int LENU   // push $ JMPU (R_X86_64_32)
+        .byte 0x68; .int LENU   // push $ LENU (R_X86_64_32)
 #else
         push $ JMPU  // for unmap in fold
         push %rax    // for unmap in fold
diff --git a/src/stub/src/amd64-win64.pep.S b/src/stub/src/amd64-win64.pep.S
index b68e1c8d..ac8123be 100644
--- a/src/stub/src/amd64-win64.pep.S
+++ b/src/stub/src/amd64-win64.pep.S
@@ -265,7 +265,7 @@ section         PEK32ORD
                 jmp     SHORT(next_imp)
 not_kernel32:
 section         PEIMORD1
-                movzxw  rdx, word ptr [rdi]
+                movzx   rdx, word ptr [rdi]
                 add     rdi, 2
                 jmp     SHORT(first_imp)
 
diff --git a/src/stub/src/i386-win32.pe.S b/src/stub/src/i386-win32.pe.S
index be98a9f5..8a5f4dfb 100644
--- a/src/stub/src/i386-win32.pe.S
+++ b/src/stub/src/i386-win32.pe.S
@@ -114,7 +114,7 @@ section         PEK32ORD
                 jmps    next_imp
 not_kernel32:
 section         PEIMORD1
-                movzxw  eax, word ptr [edi]
+                movzx   eax, word ptr [edi]
                 inc     edi
                 push    eax
                 inc     edi