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-rw-r--r--doc/man7/EVP_MAC-CMAC.pod3
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/man7/EVP_MAC-CMAC.pod b/doc/man7/EVP_MAC-CMAC.pod
index cf80586f02..3fb530c4cf 100644
--- a/doc/man7/EVP_MAC-CMAC.pod
+++ b/doc/man7/EVP_MAC-CMAC.pod
@@ -38,7 +38,8 @@ Setting this parameter is identical to passing a I<key> to L<EVP_MAC_init(3)>.
=item "cipher" (B<OSSL_MAC_PARAM_CIPHER>) <UTF8 string>
-Sets the name of the underlying cipher to be used.
+Sets the name of the underlying cipher to be used. The mode of the cipher
+must be CBC.
=item "properties" (B<OSSL_MAC_PARAM_PROPERTIES>) <UTF8 string>