diff --git a/core/recipes-bsp/systemd-boot/systemd-boot_%.bbappend b/core/recipes-bsp/systemd-boot/systemd-boot_%.bbappend
index b956ae9..1f0ddc4 100644
--- a/core/recipes-bsp/systemd-boot/systemd-boot_%.bbappend
+++ b/core/recipes-bsp/systemd-boot/systemd-boot_%.bbappend
@@ -3,5 +3,5 @@
 # external toolchain.
 EFI_TUNE_ARCH = "-m32"
 EFI_TUNE_ARCH:x86-64 = "-m64"
-EFI_CC:tcmode-external = "${@'${CC}'.split()[0]} ${EFI_TUNE_ARCH}"
+EFI_CC:tcmode-external = "${CCACHE}${HOST_PREFIX}gcc ${EFI_TUNE_ARCH}"
 EXTRA_OECONF:append:tcmode-external = " 'EFI_CC=${EFI_CC}'"