4 files changed, 10 insertions, 2 deletions
diff --git a/src/util/test_amount.c b/src/util/test_amount.c
index 7bb47caf8..03f15cb88 100644
--- a/src/util/test_amount.c
+++ b/src/util/test_amount.c
@@ -34,6 +34,8 @@ main (int argc,
   struct TALER_Amount r;
   char *c;
 
+  (void) argc;
+  (void) argv;
   GNUNET_log_setup ("test-amout",
                     "WARNING",
                     NULL);
diff --git a/src/util/test_crypto.c b/src/util/test_crypto.c
index 1fce0cd3c..de10e567d 100644
--- a/src/util/test_crypto.c
+++ b/src/util/test_crypto.c
@@ -30,7 +30,7 @@
  * @return 0 on success
  */
 static int
-test_high_level ()
+test_high_level (void)
 {
   struct GNUNET_CRYPTO_EddsaPrivateKey *pk;
   struct TALER_CoinSpendPrivateKeyP coin_priv;
@@ -88,7 +88,7 @@ test_high_level ()
  * @return 0 on success
  */
 static int
-test_planchets ()
+test_planchets (void)
 {
   struct TALER_PlanchetSecretsP ps;
   struct TALER_DenominationPrivateKey dk_priv;
@@ -127,6 +127,8 @@ int
 main (int argc,
       const char *const argv[])
 {
+  (void) argc;
+  (void) argv;
   if (0 != test_high_level ())
     return 1;
   if (0 != test_planchets ())
diff --git a/src/util/test_payto.c b/src/util/test_payto.c
index b7d73f80a..7dc2eb142 100644
--- a/src/util/test_payto.c
+++ b/src/util/test_payto.c
@@ -39,6 +39,8 @@ main (int argc,
 {
   char *r;
 
+  (void) argc;
+  (void) argv;
   GNUNET_log_setup ("test-payto",
                     "WARNING",
                     NULL);
diff --git a/src/util/test_url.c b/src/util/test_url.c
index 4be1e7307..029302993 100644
--- a/src/util/test_url.c
+++ b/src/util/test_url.c
@@ -45,6 +45,8 @@ int
 main (int argc,
       const char *const argv[])
 {
+  (void) argc;
+  (void) argv;
   cf (TALER_urlencode (""), "");
   cf (TALER_urlencode ("abc"), "abc");
   cf (TALER_urlencode ("~~"), "~~");