diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index d94ffe1df9..453bef37a9 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -644,7 +644,8 @@ EXTRA_OEMAKE:prepend:task-install = "${PARALLEL_MAKEINST} "
 # Optimization flags.
 ##################################################################
 # Beware: applied last to first
-DEBUG_PREFIX_MAP ?= "-fmacro-prefix-map=${S}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR} \
+DEBUG_PREFIX_MAP ?= "-fcanon-prefix-map \
+ -fmacro-prefix-map=${S}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR} \
  -fdebug-prefix-map=${S}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR} \
  -fmacro-prefix-map=${B}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR} \
  -fdebug-prefix-map=${B}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR} \