diff --git a/make/defs.mk b/make/defs.mk
index d421f921..5079ee36 100644
--- a/make/defs.mk
+++ b/make/defs.mk
@@ -306,8 +306,8 @@ else
 endif
 
 ifeq ($(USE_COMPILER_OPTIMIZATION_OPTS),true)
-	PROJECT_CFLAGS      += -funroll-loops -O2
-	PROJECT_CPPFLAGS    += -funroll-loops -O2
+	PROJECT_CFLAGS      += -funroll-loops -O3
+	PROJECT_CPPFLAGS    += -funroll-loops -O3
 endif