diff --git a/tests/suites/test_suite_pk.function b/tests/suites/test_suite_pk.function
index 55a8663..268721e 100644
--- a/tests/suites/test_suite_pk.function
+++ b/tests/suites/test_suite_pk.function
@@ -59,7 +59,6 @@
 {
     pk_context pk;
     unsigned char hash[50], sig[5000];
-    size_t sig_len;
 
     pk_init( &pk );