diff --git a/gcc.opts b/gcc.opts
index 862d09443d92ee2a427f53e8ea92eb20c496390b..0d164b706dd765869db37e4dbfadfd3fd88ab0d6 100644
--- a/gcc.opts
+++ b/gcc.opts
@@ -14,4 +14,4 @@ FLAGS="-Wall"
 DEBUGFLAGS="-g"
 
 # additional flags for optimization
-OPTIMFLAGS="-O3 -unroll"
+OPTIMFLAGS="-O3 -unroll -DNDEBUG"