diff --git a/configure/os/CONFIG.darwin-ppc.darwin-ppc-debug b/configure/os/CONFIG.darwin-ppc.darwin-ppc-debug
index e9202cafe..fe907aa46 100644
--- a/configure/os/CONFIG.darwin-ppc.darwin-ppc-debug
+++ b/configure/os/CONFIG.darwin-ppc.darwin-ppc-debug
@@ -10,8 +10,5 @@
 -include $(CONFIG)/os/CONFIG.Common.darwin-ppc
 -include $(CONFIG)/os/CONFIG.darwin-ppc.darwin-ppc
 
-# This will cause build failure when used with make -j option
-#BUILD_CLASS = HOST
-#HOST_OPT = NO
-
-CROSS_OPT=NO
+BUILD_CLASS=HOST
+HOST_OPT = NO
diff --git a/configure/os/CONFIG.darwin-x86.darwin-x86-debug b/configure/os/CONFIG.darwin-x86.darwin-x86-debug
index cded9f21b..653036dfc 100644
--- a/configure/os/CONFIG.darwin-x86.darwin-x86-debug
+++ b/configure/os/CONFIG.darwin-x86.darwin-x86-debug
@@ -10,8 +10,5 @@
 -include $(CONFIG)/os/CONFIG.Common.darwin-x86
 -include $(CONFIG)/os/CONFIG.darwin-x86.darwin-x86
 
-# This will cause build failure when used with make -j option
-#BUILD_CLASS = HOST
-#HOST_OPT = NO
-
-CROSS_OPT=NO
+BUILD_CLASS=HOST
+HOST_OPT = NO