diff --git a/yocto-poky/meta/conf/machine/include/tune-ppce5500.inc b/yocto-poky/meta/conf/machine/include/tune-ppce5500.inc
index 25231ef..ace2614 100644
--- a/yocto-poky/meta/conf/machine/include/tune-ppce5500.inc
+++ b/yocto-poky/meta/conf/machine/include/tune-ppce5500.inc
@@ -3,7 +3,7 @@
 require conf/machine/include/powerpc/arch-powerpc64.inc
 
 TUNEVALID[e5500] = "Enable Freescale e5500 specific processor optimizations"
-TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "e5500", " -mcpu=e5500", "", d)}"
+TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'e5500', ' -mcpu=e5500', '', d)}"
 
 AVAILTUNES += "ppce5500 ppc64e5500"
 TUNE_FEATURES_tune-ppce5500 = "m32 fpu-hard e5500"
@@ -17,4 +17,4 @@
 PACKAGE_EXTRA_ARCHS_tune-ppc64e5500 = "${PACKAGE_EXTRA_ARCHS_tune-powerpc64} ppc64e5500"
 
 # glibc configure options to get e5500 specific library (for sqrt)
-GLIBC_EXTRA_OECONF += "${@bb.utils.contains("TUNE_FEATURES", "e5500", "--with-cpu=e5500", "", d)}"
+GLIBC_EXTRA_OECONF += "${@bb.utils.contains('TUNE_FEATURES', 'e5500', '--with-cpu=e5500', '', d)}"