diff --git a/platform/common/common.mak b/platform/common/common.mak
index 0aabeab6..183a7159 100644
--- a/platform/common/common.mak
+++ b/platform/common/common.mak
@@ -200,7 +200,8 @@ $(FR)cpu/cyclone/Cyclone.h:
 
 $(FR)cpu/cyclone/Cyclone.s: $(FR)cpu/$(CYCLONE_CONFIG)
 	@echo building Cyclone...
-	@make CC=$(CYCLONE_CC) CXX=$(CYCLONE_CXX) -C $(R)cpu/cyclone/ CONFIG_FILE=../$(CYCLONE_CONFIG) HAVE_ARMv6=$(HAVE_ARMv6)
+	@export CC=$(CYCLONE_CC) CXX=$(CYCLONE_CXX) CFLAGS=-O2; \
+	 make -C $(R)cpu/cyclone/ CONFIG_FILE=../$(CYCLONE_CONFIG) HAVE_ARMv6=$(HAVE_ARMv6)
 
 $(FR)cpu/cyclone/Cyclone.s: $(FR)cpu/cyclone/*.cpp $(FR)cpu/cyclone/*.h