diff --git a/Makefile.PL b/Makefile.PL
index c5458e5..4690c81 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -255,6 +255,8 @@ WriteMakefile(
 
 package MY;
 
+use Config;
+
 sub postamble {
 	require DBI;
 	require DBI::DBD;
@@ -268,3 +270,24 @@ sub libscan {
 	return if $path =~ /\.pl$/;
 	($path =~ m/\~$/) ? undef : $path;
 }
+
+sub test_via_harness {
+	my ($self, $perl, $tests) = @_;
+	if ($^O eq 'hpux' and $Config{osvers} <= 10.20) {
+		return qq{\tPERL_DL_NONLAZY=0 $perl "-MExtUtils::Command::MM" }.
+				qq{"-e" "test_harness(\$(TEST_VERBOSE), '\$(INST_LIB)', '\$(INST_ARCHLIB)')" $tests\n};
+	}
+	else {
+		$self->SUPER::test_via_harness($perl, $tests);
+	}
+}
+
+sub test_via_script {
+	my ($self, $perl, $script) = @_;
+	if ($^O eq 'hpux' and $Config{osvers} <= 10.20) {
+		return qq{\tPERL_DL_NONLAZY=0 $perl "-I\$(INST_LIB)" "-I\$(INST_ARCHLIB)" $script\n};
+	}
+	else {
+		$self->SUPER::test_via_script($perl, $script);
+	}
+}