diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 252fa7da3..5aa9b906f 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -1088,9 +1088,9 @@ component_test_have_int64 () {
 }
 
 component_build_arm_none_eabi_gcc () {
-    msg "build: ${ARM_NONE_EABI_GCC_PREFIX}, make" # ~ 10s
+    msg "build: ${ARM_NONE_EABI_GCC_PREFIX}gcc -O1, make" # ~ 10s
     scripts/config.pl baremetal
-    make CC="${ARM_NONE_EABI_GCC_PREFIX}gcc" AR="${ARM_NONE_EABI_GCC_PREFIX}ar" LD="${ARM_NONE_EABI_GCC_PREFIX}ld" CFLAGS='-Werror -Wall -Wextra' lib
+    make CC="${ARM_NONE_EABI_GCC_PREFIX}gcc" AR="${ARM_NONE_EABI_GCC_PREFIX}ar" LD="${ARM_NONE_EABI_GCC_PREFIX}ld" CFLAGS='-Werror -Wall -Wextra -O1' lib
 }
 
 component_build_arm_none_eabi_gcc_arm5vte () {