diff --git a/src/x86_64/Gos-linux.c b/src/x86_64/Gos-linux.c
index e2929beb..b7f832ca 100644
--- a/src/x86_64/Gos-linux.c
+++ b/src/x86_64/Gos-linux.c
@@ -87,6 +87,7 @@ unw_is_signal_frame (unw_cursor_t *cursor)
 PROTECTED int
 unw_handle_signal_frame (unw_cursor_t *cursor)
 {
+#if UNW_DEBUG /* To silence compiler warnings */
   /* Should not get here because we now use kernel-provided dwarf
      information for the signal trampoline and dwarf_step() works.
      Hence dwarf_step() should never call this function. Maybe
@@ -98,6 +99,7 @@ unw_handle_signal_frame (unw_cursor_t *cursor)
   assert(c->sigcontext_format == X86_64_SCF_LINUX_RT_SIGFRAME);
   assert(c->sigcontext_addr == c->dwarf.cfa);
   assert(0);
+#endif
   return 1;
 }