diff --git a/configs/arc-zephyr-elf.config b/configs/arc-zephyr-elf.config
index 01a21cab..daafa527 100644
--- a/configs/arc-zephyr-elf.config
+++ b/configs/arc-zephyr-elf.config
@@ -4,7 +4,7 @@ CT_EXPERIMENTAL=y
 # CT_LOG_PROGRESS_BAR is not set
 CT_ARCH_ARC=y
 CT_MULTILIB=y
-CT_TARGET_CFLAGS="-mno-sdata"
+CT_TARGET_CFLAGS="-mno-sdata -mtp-regno=26"
 CT_TARGET_VENDOR="zephyr"
 CT_BINUTILS_SRC_CUSTOM=y
 CT_BINUTILS_CUSTOM_LOCATION="${GITHUB_WORKSPACE}/binutils"