diff --git a/library/pk.c b/library/pk.c
index 7e77282..7a047df 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -64,6 +64,12 @@
 #if defined(MBEDTLS_PSA_CRYPTO_C)
     ctx->priv_id = MBEDTLS_SVC_KEY_ID_INIT;
 #endif /* MBEDTLS_PSA_CRYPTO_C */
+#if defined(MBEDTLS_PK_USE_PSA_EC_DATA)
+    memset(ctx->pub_raw, 0, sizeof(ctx->pub_raw));
+    ctx->pub_raw_len = 0;
+    ctx->ec_family = 0;
+    ctx->ec_bits = 0;
+#endif /* MBEDTLS_PK_USE_PSA_EC_DATA */
 }
 
 /*