diff --git a/js/src/nanojit/LIR.cpp b/js/src/nanojit/LIR.cpp
index d7f39971b0b..1e5b7335c4d 100644
--- a/js/src/nanojit/LIR.cpp
+++ b/js/src/nanojit/LIR.cpp
@@ -2134,6 +2134,7 @@ namespace nanojit
 #endif // NJ_VERBOSE
 
 
+#ifdef FEATURE_NANOJIT
 #ifdef DEBUG
     LIns* SanityFilter::ins1(LOpcode v, LIns* s0)
     {
@@ -2227,5 +2228,6 @@ namespace nanojit
         return out->ins3(v, s0, s1, s2);
     }
 #endif
+#endif
 
 }