diff --git a/library/debug.c b/library/debug.c
index 41769ec..b02a4f8 100644
--- a/library/debug.c
+++ b/library/debug.c
@@ -402,7 +402,7 @@
             return;
         }
         debug_print_pk( ssl, level, file, line, "crt->", pk );
-        mbedtls_x509_crt_pk_release( crt, pk );
+        mbedtls_x509_crt_pk_release( crt );
 
         crt = crt->next;
     }