diff --git a/lib/LaTeXML/Engine/plain.pool.ltxml b/lib/LaTeXML/Engine/plain.pool.ltxml
index 20b9b94d2b..27721d3532 100644
--- a/lib/LaTeXML/Engine/plain.pool.ltxml
+++ b/lib/LaTeXML/Engine/plain.pool.ltxml
@@ -971,8 +971,8 @@ DefMathI('\wr', undef, "\x{2240}", role => 'MULOP');
DefMathI('\diamond', undef, "\x{22C4}", role => 'ADDOP');
DefMathI('\bigtriangleup', undef, "\x{25B3}", role => 'ADDOP');
DefMathI('\bigtriangledown', undef, "\x{25BD}", role => 'ADDOP');
-DefMathI('\triangleleft', undef, "\x{25C1}", role => 'ADDOP');
-DefMathI('\triangleright', undef, "\x{25B7}", role => 'ADDOP');
+DefMathI('\triangleleft', undef, "\x{22B2}", role => 'ADDOP');
+DefMathI('\triangleright', undef, "\x{22B3}", role => 'ADDOP');
DefMathI('\lhd', undef, "\x{22B2}", role => 'ADDOP', meaning => 'subgroup-of');
DefMathI('\rhd', undef, "\x{22B3}", role => 'ADDOP', meaning => 'contains-as-subgroup');
DefMathI('\unlhd', undef, "\x{22B4}", role => 'ADDOP', meaning => 'subgroup-of-or-equals');
diff --git a/t/alignment/algx.xml b/t/alignment/algx.xml
index 206dfa9ab7..a5e6ef99fa 100644
--- a/t/alignment/algx.xml
+++ b/t/alignment/algx.xml
@@ -68,7 +68,7 @@
)