diff --git a/library/pkparse.c b/library/pkparse.c
index 22dab3a..0e3e6ee 100644
--- a/library/pkparse.c
+++ b/library/pkparse.c
@@ -866,7 +866,7 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     int version, pubkey_done;
     size_t len;
-    mbedtls_asn1_buf params;
+    mbedtls_asn1_buf params = { 0, 0, NULL };
     unsigned char *p = (unsigned char *) key;
     unsigned char *end = p + keylen;
     unsigned char *end2;