diff --git a/shells/ast-ksh/Makefile b/shells/ast-ksh/Makefile
index f179994d100f..727f83d55ea9 100644
--- a/shells/ast-ksh/Makefile
+++ b/shells/ast-ksh/Makefile
@@ -33,7 +33,7 @@ GH_TAGNAME=	ksh93v
 # IMPORTANT:	Disabling conflicts, i.e. -DDISABLE_CONFLICTS will result in
 #		arcane build failures due to already installed ksh/ksh93 in
 #		$PATH.
-CONFLICTS=	ksh2020 ksh93 ksh93-devel
+CONFLICTS=	ksh93 ksh93-devel
 
 OPTIONS_DEFINE=	EXAMPLES STATIC
 
diff --git a/shells/ksh-devel/Makefile b/shells/ksh-devel/Makefile
index 5acc52492d8f..e298cfb5a242 100644
--- a/shells/ksh-devel/Makefile
+++ b/shells/ksh-devel/Makefile
@@ -37,8 +37,8 @@ GH_TAGNAME=	${HASH}
 #		arcane build failures due to already installed ksh/ksh93 in
 #		$PATH.
 KSH_CONFLICTS=		pdksh
-KSH93_CONFLICTS=	ksh2020 ksh93 ast-ksh
-KSH93D_CONFLICTS=	ksh2020 ksh93 ast-ksh
+KSH93_CONFLICTS=	ksh93 ast-ksh
+KSH93D_CONFLICTS=	ksh93 ast-ksh
 
 OPTIONS_DEFAULT=	KSH93 EXAMPLES
 OPTIONS_DEFINE=		EXAMPLES STATIC
diff --git a/shells/ksh/Makefile b/shells/ksh/Makefile
index ca0d38165128..dd37fa96e3ca 100644
--- a/shells/ksh/Makefile
+++ b/shells/ksh/Makefile
@@ -32,7 +32,7 @@ GH_PROJECT=	ksh
 #		arcane build failures due to already installed ksh/ksh93 in
 #		$PATH.
 KSH_CONFLICTS=		pdksh
-KSH93_CONFLICTS=	ksh2020 ksh93 ast-ksh ksh-devel
+KSH93_CONFLICTS=	ksh93 ast-ksh ksh-devel
 
 OPTIONS_DEFAULT=	KSH93 EXAMPLES
 OPTIONS_DEFINE=		EXAMPLES STATIC
diff --git a/shells/ksh93/Makefile b/shells/ksh93/Makefile
index 59464583933c..99f597269aee 100644
--- a/shells/ksh93/Makefile
+++ b/shells/ksh93/Makefile
@@ -32,7 +32,7 @@ GH_ACCOUNT=	att
 GH_PROJECT=	ast
 
 KSH_CONFLICTS=		pdksh
-KSH93_CONFLICTS=	ksh2020 ksh93-devel ast-ksh
+KSH93_CONFLICTS=	ksh93-devel ast-ksh
 
 OPTIONS_DEFAULT=	KSH93 EXAMPLES
 OPTIONS_DEFINE=		EXAMPLES STATIC