diff --git a/readconf.c b/readconf.c

index 7f26c680..42be690b 100644

--- a/readconf.c

+++ b/readconf.c

@@ -320,6 +320,7 @@ static struct {

 	{ "securitykeyprovider", oSecurityKeyProvider },

 	{ "knownhostscommand", oKnownHostsCommand },

	{ "requiredrsasize", oRequiredRSASize },

+	{ "rsaminsize", oRequiredRSASize }, /* alias */

 	{ "enableescapecommandline", oEnableEscapeCommandline },

 	{ NULL, oBadOption }

diff --git a/servconf.c b/servconf.c

index 29df0463..423772b1 100644

--- a/servconf.c

+++ b/servconf.c

@@ -676,6 +680,7 @@ static struct {

 	{ "casignaturealgorithms", sCASignatureAlgorithms, SSHCFG_ALL },

 	{ "securitykeyprovider", sSecurityKeyProvider, SSHCFG_GLOBAL },

	{ "requiredrsasize", sRequiredRSASize, SSHCFG_ALL },

+	{ "rsaminsize", sRequiredRSASize, SSHCFG_ALL }, /* alias */

 	{ "channeltimeout", sChannelTimeout, SSHCFG_ALL },

 	{ "unusedconnectiontimeout", sUnusedConnectionTimeout, SSHCFG_ALL },

 	{ NULL, sBadOption, 0 }