diff --git a/mozilla/config/config.mk b/mozilla/config/config.mk
index e5da48b928a..676922e32b4 100644
--- a/mozilla/config/config.mk
+++ b/mozilla/config/config.mk
@@ -758,35 +758,3 @@ ifeq ($(USE_PTHREADS), 1)
 DEFINES += -D_PR_PTHREADS -UHAVE_CVAR_BUILT_ON_SEM
 endif
 endif #!USE_AUTOCONF
-
-##
-## If MOZ_NATIVE_NSPR is not set, then we are building with NSPR in
-## the source tree (mozilla/nsprpub).
-##
-## We need to export these two variables into the environment so that
-## make processes running on makefiles and code within nsprpub will
-## have options/behavior compatible with stuff automatically set 
-## by autoconf.
-##
-## NSPR_IGNORE_OBJDIR_FOR_DIST
-## 
-## Causes NSPR to ignore the OBJDIR variable when setting $(DIST), 
-## so that it installs its stuff in 
-##
-## mozilla/dist/{bin,lib,include}
-##
-## (as mozilla does) instead of 
-##
-## mozilla/dist/$(OBJDIR)/{bin,lib,include}.
-##
-## NSPR_EXTRA_ENVIRONMENT
-##
-## Causes the NSPR build system to include the file build/nsprenv.mk
-## into its build environment.  This file is autoconf genereated 
-## from mozilla/build/nsprenv.mk.in and will contain the environment
-## needed to build an NSPR that compatible with mozilla as detected
-## by autoconf.
-ifndef MOZ_NATIVE_NSPR
-export NSPR_IGNORE_OBJDIR_FOR_DIST = 1
-export NSPR_EXTRA_ENVIRONMENT=build/nsprenv.mk
-endif