diff --git a/solenv/gbuild/platform/IOS_ARM_GCC.mk b/solenv/gbuild/platform/IOS_ARM_GCC.mk
index d72043b4b1b5..dcab4c25c363 100644
--- a/solenv/gbuild/platform/IOS_ARM_GCC.mk
+++ b/solenv/gbuild/platform/IOS_ARM_GCC.mk
@@ -31,8 +31,6 @@ COM := GCC
 
 gb_CPUDEFS := -DARM32
 
-gb_COMPILERDEFAULTOPTFLAGS := -O2
-
 ifeq ($(CC),)
 $(error You must set CC in the environment. See README.cross for example.)
 endif