diff --git a/t/macros/load_macros.t b/t/macros/load_macros.t
index 59d37ed799..4fca0f731a 100644
--- a/t/macros/load_macros.t
+++ b/t/macros/load_macros.t
@@ -34,7 +34,17 @@ my %baseMacros = (
 );
 
 # PG_CAPAmacros.pl is not really broken, but it depends on files that are in the OPL and not in the PG repository.
-my %brokenMacros = ('answerDiscussion.pl' => 1, 'PG_CAPAmacros.pl' => 1);
+# PGplot helper macros Axes.pl, GD.pl, Tikz.pl, and Data.pl are not really broken, but shouldn't be loaded directly.
+# PGplotmacros.pl overrides some default WWplot objects. Loading this causes other test to fail.
+my %brokenMacros = (
+	'answerDiscussion.pl' => 1,
+	'PG_CAPAmacros.pl'    => 1,
+	'Axes.pl'             => 1,
+	'GD.pl'               => 1,
+	'Tikz.pl'             => 1,
+	'Data.pl'             => 1,
+	'PGplotmacros.pl'     => 1,
+);
 
 # Find all macro files inside the $ENV{PG_ROOT}/macros directory.
 my @macro_files;