diff --git a/src/mzscheme/src/jit.c b/src/mzscheme/src/jit.c
index cdb82a6908..1df782dbdf 100644
--- a/src/mzscheme/src/jit.c
+++ b/src/mzscheme/src/jit.c
@@ -8406,6 +8406,7 @@ static void check_stack(void)
 }
 #endif
 
+MZ_DO_NOT_INLINE(unsigned long scheme_approx_sp());
 unsigned long scheme_approx_sp()
 {
   unsigned long p;