diff --git a/mk/boilerplate.mk b/mk/boilerplate.mk
index 69cab3e375bd96fcfdbe72af888641368e3c2e52..906cd0bd9334fabec720d7e37eea6874d5d957c0 100644
--- a/mk/boilerplate.mk
+++ b/mk/boilerplate.mk
@@ -20,7 +20,6 @@ SIZE = size
 STRIP = strip
 PERL = /usr/bin/perl
 CONTEXT_DIFF = diff -U 1
-DEFAULT_TMPDIR = /tmp
 EXECUTABLE_FILE = chmod +x
 
 # Benchmarks controls which set of tests should be run
diff --git a/runstdtest/Makefile b/runstdtest/Makefile
index 3762410f1ecb5b582b22c0c5f0b89f9319d04d86..1dc8f6c47335d43b466ed93031504acb38bf224c 100644
--- a/runstdtest/Makefile
+++ b/runstdtest/Makefile
@@ -7,7 +7,6 @@ all::
 	$(RM) -f $(PROG)
 	echo '#!$(PERL)'                               >> $(PROG)
 	echo '$$RM             = "$(RM)";'             >> $(PROG)
-	echo '$$DEFAULT_TMPDIR = "$(DEFAULT_TMPDIR)";' >> $(PROG)
 	echo '$$CONTEXT_DIFF   = "$(CONTEXT_DIFF)";'   >> $(PROG)
 	cat $(PROG).prl                                >> $(PROG)
 	$(EXECUTABLE_FILE) $(PROG)
diff --git a/runstdtest/runstdtest.prl b/runstdtest/runstdtest.prl
index 538dfa912c720800819fda8fc374e9fcd1049933..bab0ab46a1ce3068759a518940e53693d72e8b8c 100644
--- a/runstdtest/runstdtest.prl
+++ b/runstdtest/runstdtest.prl
@@ -2,7 +2,6 @@
 # The perl script requires the following variables to be bound
 # to something meaningful before it will operate correctly:
 #   
-#   DEFAULT_TMPDIR
 #   CONTEXT_DIFF
 #   RM
 #
@@ -53,8 +52,8 @@ $PgmStdinFile  = '/dev/null';
 if ( $ENV{'TMPDIR'} ) { # where to make tmp file names
     $TmpPrefix = $ENV{'TMPDIR'};
 } else {
-    $TmpPrefix ="$DEFAULT_TMPDIR";
-    $ENV{'TMPDIR'} = "$DEFAULT_TMPDIR"; # set the env var as well
+    $TmpPrefix = '/tmp';
+    $ENV{'TMPDIR'} = '/tmp'; # set the env var as well
 }
 # If this is Cygwin, ignore eol and CR characters.
 # Perhaps required for MSYS too, although the cygpath