diff --git a/lib/cryptohi/seckey.c b/lib/cryptohi/seckey.c
--- a/lib/cryptohi/seckey.c
+++ b/lib/cryptohi/seckey.c
@@ -993,17 +993,17 @@ SECKEY_PublicKeyStrengthInBits(const SEC
     }
 
     /* interpret modulus length as key strength */
     switch (pubk->keyType) {
     case rsaKey:
         bitSize = SECKEY_BigIntegerBitLength(&pubk->u.rsa.modulus);
         break;
     case dsaKey:
-        bitSize = SECKEY_BigIntegerBitLength(&pubk->u.dsa.publicValue);
+        bitSize = SECKEY_BigIntegerBitLength(&pubk->u.dsa.params.prime);
         break;
     case dhKey:
         bitSize = SECKEY_BigIntegerBitLength(&pubk->u.dh.publicValue);
         break;
     case ecKey:
         bitSize = SECKEY_ECParamsToKeySize(&pubk->u.ec.DEREncodedParams);
         break;
     default: