diff --git a/src/x86/Gos-freebsd.c b/src/x86/Gos-freebsd.c
index 928955b4..247c35fa 100644
--- a/src/x86/Gos-freebsd.c
+++ b/src/x86/Gos-freebsd.c
@@ -351,7 +351,7 @@ x86_local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
       struct sigcontext *sc = (struct sigcontext *) c->sigcontext_addr;
 
       Debug (8, "resuming at ip=%x via sigreturn(%p)\n", c->dwarf.ip, sc);
-      sigreturn((ucontext_t *)((const char *)sc + FREEBSD_UC_MCONTEXT_OFF));
+      sigreturn((ucontext_t *)((const char *)sc + FREEBSD_SC_UCONTEXT_OFF));
       abort();
   } else {
       Debug (8, "resuming at ip=%x for sigcontext format %d not implemented\n",
diff --git a/src/x86/offsets.h b/src/x86/offsets.h
index 0f07352b..e8a255cd 100644
--- a/src/x86/offsets.h
+++ b/src/x86/offsets.h
@@ -85,7 +85,7 @@
 
 /* FreeBSD-specific definitions: */
 
-#define FREEBSD_SC_UCONTEXT_OFF		0x14
+#define FREEBSD_SC_UCONTEXT_OFF		0x20
 #define FREEBSD_UC_MCONTEXT_OFF		0x10
 
 #define FREEBSD_UC_MCONTEXT_GS_OFF	0x14