diff --git a/meta-arm/recipes-security/optee/optee-os-ts.inc b/meta-arm/recipes-security/optee/optee-os-ts.inc
index 10a41755..73b8c14f 100644
--- a/meta-arm/recipes-security/optee/optee-os-ts.inc
+++ b/meta-arm/recipes-security/optee/optee-os-ts.inc
@@ -51,4 +51,4 @@ DEPENDS:append  = "${@bb.utils.contains('MACHINE_FEATURES', 'ts-smm-gateway', \
 SP_PATHS:append = "${@bb.utils.contains('MACHINE_FEATURES', 'ts-smm-gateway', \
                                         ' ${TS_BIN}/${SMM_GATEWAY_UUID}.stripped.elf', '', d)}"
 
-EXTRA_OEMAKE:append = "${@oe.utils.conditional('SP_PATHS', '', '', ' CFG_SECURE_PARTITION=y SP_PATHS=\'${SP_PATHS}\' ', d)}"
+EXTRA_OEMAKE:append = "${@oe.utils.conditional('SP_PATHS', '', '', ' CFG_SECURE_PARTITION=y SP_PATHS="${SP_PATHS}" ', d)}"