diff --git a/arm-none-eabi-newlib.spec b/arm-none-eabi-newlib.spec
index c50d47f..d1a8e6a 100644
--- a/arm-none-eabi-newlib.spec
+++ b/arm-none-eabi-newlib.spec
@@ -51,9 +51,7 @@ export CFLAGS="-g -O2 -ffunction-sections -fdata-sections"
     --enable-newlib-retargetable-locking \
     --disable-newlib-supplied-syscalls \
     --disable-nls
-    --enable-interwork \
     --enable-multilib \
-    --enable-newlib-io-long-long \
     --disable-libssp \
     --with-float=soft