diff --git a/libc/arch-mips/bionic/__bionic_clone.S b/libc/arch-mips/bionic/__bionic_clone.S
index 11d596b..7b138ae 100644
--- a/libc/arch-mips/bionic/__bionic_clone.S
+++ b/libc/arch-mips/bionic/__bionic_clone.S
@@ -54,6 +54,9 @@
         j ra
 
 .L__thread_start_bc:
+        # Clear return address in child so we don't unwind further.
+        li      ra,0
+
         lw	a0,0(sp)	#  fn
         lw	a1,4(sp)	#  arg
 
diff --git a/libc/arch-mips64/bionic/__bionic_clone.S b/libc/arch-mips64/bionic/__bionic_clone.S
index 754861b..8687906 100644
--- a/libc/arch-mips64/bionic/__bionic_clone.S
+++ b/libc/arch-mips64/bionic/__bionic_clone.S
@@ -75,6 +75,9 @@
 	j	ra
 
 .L__thread_start_bc:
+	# Clear return address in child so we don't unwind further.
+	li	ra,0
+
 	# void __bionic_clone_entry(int (*func)(void*), void *arg)
 	PTR_L	a0,FRAME_FN(sp)		#  fn
 	PTR_L	a1,FRAME_ARG(sp)	#  arg