diff --git a/src/stub/src/amd64-linux.elf-main.c b/src/stub/src/amd64-linux.elf-main.c
index 317a36f7..c7125878 100644
--- a/src/stub/src/amd64-linux.elf-main.c
+++ b/src/stub/src/amd64-linux.elf-main.c
@@ -296,7 +296,7 @@ make_hatch_ppc64(
             hatch[2]= 0x38800000;  // li r4,0
             hatch[3]= 0x4e800020;  // blr
             if (xprot) {
-                Pprotect(hatch, 3*sizeof(unsigned), PROT_EXEC|PROT_READ);
+                Pprotect(hatch, 4*sizeof(unsigned), PROT_EXEC|PROT_READ);
             }
         }
         else {
diff --git a/src/stub/src/arm64-linux.elf-so_entry.S b/src/stub/src/arm64-linux.elf-so_entry.S
index 92b2525b..421ac094 100644
--- a/src/stub/src/arm64-linux.elf-so_entry.S
+++ b/src/stub/src/arm64-linux.elf-so_entry.S
@@ -93,7 +93,7 @@ arg6w .req w5
 
         .balign 4
 _start: .globl _start
-        bkpt // DEBUG
+        bkpt // DEBUG // ???
         PUSH4 (x0,x1,x2,lr)  // MATCH_00
 
         sub sp,sp,#2*NBPW  // space for ADRU, LENU