diff --git a/basis/cpu/x86/32/bootstrap.factor b/basis/cpu/x86/32/bootstrap.factor
index 5b3bff1fc6..15a7dc1c29 100644
--- a/basis/cpu/x86/32/bootstrap.factor
+++ b/basis/cpu/x86/32/bootstrap.factor
@@ -91,21 +91,11 @@ IN: bootstrap.x86
     jit-load-context
     jit-restore-context
 
-    ! save C callstack pointer
-    ctx-reg context-callstack-save-offset [+] ESP MOV
-
-    ! load Factor callstack pointer
-    ESP ctx-reg context-callstack-bottom-offset [+] MOV
-    ESP 4 ADD
-
     jit-call-quot
 
     jit-load-vm
     jit-save-context
 
-    ! load C callstack pointer
-    ESP ctx-reg context-callstack-save-offset [+] MOV
-
     ESP [] vm-reg MOV
     "end_callback" jit-call
 ] \ c-to-factor define-sub-primitive
diff --git a/basis/cpu/x86/64/bootstrap.factor b/basis/cpu/x86/64/bootstrap.factor
index b068c60352..2f03823d45 100644
--- a/basis/cpu/x86/64/bootstrap.factor
+++ b/basis/cpu/x86/64/bootstrap.factor
@@ -82,22 +82,12 @@ IN: bootstrap.x86
 
     jit-restore-context
 
-    ! save C callstack pointer
-    ctx-reg context-callstack-save-offset [+] stack-reg MOV
-
-    ! load Factor callstack pointer
-    stack-reg ctx-reg context-callstack-bottom-offset [+] MOV
-    stack-reg 8 ADD
-
     ! call the quotation
     arg1 nv-reg MOV
     jit-call-quot
 
     jit-save-context
 
-    ! load C callstack pointer
-    stack-reg ctx-reg context-callstack-save-offset [+] MOV
-
     arg1 vm-reg MOV
     "end_callback" jit-call
 ] \ c-to-factor define-sub-primitive