diff --git a/im/content/Makefile.in b/im/content/Makefile.in
index 93ae9d46e2..567a457854 100644
--- a/im/content/Makefile.in
+++ b/im/content/Makefile.in
@@ -25,6 +25,6 @@ ifdef MOZ_UPDATER
 DEFINES += -DMOZ_UPDATER=1
 endif
 
-abs_srcdir = $(call core_abspath,$(srcdir))
+abs_srcdir = $(abspath $(srcdir))
 CHROME_DEPS += $(abs_srcdir)/overrides/app-license.html
 DEFINES += -DAPP_LICENSE_BLOCK=$(abs_srcdir)/overrides/app-license.html
diff --git a/im/locales/Makefile.in b/im/locales/Makefile.in
index e89d1c0e32..9de64aa921 100644
--- a/im/locales/Makefile.in
+++ b/im/locales/Makefile.in
@@ -17,7 +17,7 @@ DEFINES += -DMOZ_APP_MAXVERSION=$(MOZ_APP_MAXVERSION)
 vpath %.xml @srcdir@/en-US/searchplugins
 vpath %.xml $(LOCALE_SRCDIR)/searchplugins
 
-_ABS_SRCDIR := $(call core_abspath,$(topsrcdir))
+_ABS_SRCDIR := $(abspath $(topsrcdir))
 
 ifndef MOZ_BRANDING_DIRECTORY
 MOZ_BRANDING_DIRECTORY = im/branding/nightly