diff --git a/src/mzscheme/src/setjmpup.c b/src/mzscheme/src/setjmpup.c
index 768c57472c..efc45072a0 100644
--- a/src/mzscheme/src/setjmpup.c
+++ b/src/mzscheme/src/setjmpup.c
@@ -457,12 +457,6 @@ int scheme_setjmpup_relative(Scheme_Jumpup_Buf *b, void *base,
 
   FLUSH_REGISTER_WINDOWS;
 
-  if (c) {
-    if (STK_COMP(c->buf.stack_from, start)) {
-      c = NULL;
-    }
-  }
-
   if (STK_COMP((unsigned long)start, (unsigned long)&local))
     start = (void *)&local;