diff --git a/macros/core/PGML.pl b/macros/core/PGML.pl
index 355c2c3de..34cba7fc0 100644
--- a/macros/core/PGML.pl
+++ b/macros/core/PGML.pl
@@ -1613,13 +1613,13 @@ sub Par {
 sub Bold {
 	my $self = shift;
 	my $item = shift;
-	return '<b>' . $self->string($item) . '</b>';
+	return '<strong>' . $self->string($item) . '</strong>';
 }
 
 sub Italic {
 	my $self = shift;
 	my $item = shift;
-	return '<i>' . $self->string($item) . '</i>';
+	return '<em>' . $self->string($item) . '</em>';
 }
 
 our %openQuote  = ('"' => "&#x201C;", "'" => "&#x2018;");
diff --git a/macros/core/PGbasicmacros.pl b/macros/core/PGbasicmacros.pl
index 94b8e5657..c730e6727 100644
--- a/macros/core/PGbasicmacros.pl
+++ b/macros/core/PGbasicmacros.pl
@@ -1319,8 +1319,8 @@ sub SPACE {
 sub EBOLD   { MODES(TeX => '}',            HTML => '</STRONG>', PTX => '</alert>'); }
 sub BLABEL  { MODES(TeX => '',             HTML => '<LABEL>',   PTX => ''); }
 sub ELABEL  { MODES(TeX => '',             HTML => '</LABEL>',  PTX => ''); }
-sub BITALIC { MODES(TeX => '{\\it ',       HTML => '<I>',       PTX => '<em>'); }
-sub EITALIC { MODES(TeX => '} ',           HTML => '</I>',      PTX => '</em>'); }
+sub BITALIC { MODES(TeX => '{\\it ',       HTML => '<em>',      PTX => '<em>'); }
+sub EITALIC { MODES(TeX => '} ',           HTML => '</em>',     PTX => '</em>'); }
 sub BUL     { MODES(TeX => '\\underline{', HTML => '<U>',       PTX => '<em>'); }
 sub EUL     { MODES(TeX => '}',            HTML => '</U>',      PTX => '</em>'); }