diff --git a/library/pk.c b/library/pk.c
index bac685d..da34e56 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -120,10 +120,15 @@
         case MBEDTLS_PK_ECKEY_DH:
             return( &mbedtls_eckeydh_info );
 #endif
+#if defined(MBEDTLS_USE_TINYCRYPT)
+        case MBEDTLS_PK_ECDSA:
+            return( &mbedtls_uecc_ecdsa_info );
+#else
 #if defined(MBEDTLS_ECDSA_C)
         case MBEDTLS_PK_ECDSA:
             return( &mbedtls_ecdsa_info );
 #endif
+#endif /* MBEDTLS_USE_TINYCRYPT */
         /* MBEDTLS_PK_RSA_ALT omitted on purpose */
         default:
             return( NULL );