diff --git a/lib/util/regress/hexchar/hexchar_test.c b/lib/util/regress/hexchar/hexchar_test.c
index 284d1d42b..097cbcd8f 100644
--- a/lib/util/regress/hexchar/hexchar_test.c
+++ b/lib/util/regress/hexchar/hexchar_test.c
@@ -46,7 +46,7 @@ main(int argc, char *argv[])
 
     /* Build up test data. */
     ntests = 256 + 256 + 3;
-    test_data = calloc(sizeof(*test_data), (size_t)ntests);
+    test_data = calloc((size_t)ntests, sizeof(*test_data));
     for (i = 0; i < 256; i++) {
 	/* lower case */
 	test_data[i].value = i;
diff --git a/lib/util/regress/parse_gids/parse_gids_test.c b/lib/util/regress/parse_gids/parse_gids_test.c
index 786843ff7..3a94a72e6 100644
--- a/lib/util/regress/parse_gids/parse_gids_test.c
+++ b/lib/util/regress/parse_gids/parse_gids_test.c
@@ -69,7 +69,8 @@ int
 main(int argc, char *argv[])
 {
     GETGROUPS_T *gidlist = NULL;
-    int i, j, errors = 0, ntests = 0;
+    size_t i;
+    int j, errors = 0, ntests = 0;
     int ch, ngids;
 
     initprogname(argc > 0 ? argv[0] : "parse_gids_test");
diff --git a/lib/util/sudo_conf.c b/lib/util/sudo_conf.c
index 3104da166..f884baa0b 100644
--- a/lib/util/sudo_conf.c
+++ b/lib/util/sudo_conf.c
@@ -360,7 +360,7 @@ parse_plugin(const char *entry, const char *conf_file, unsigned int lineno)
 	options[nopts] = NULL;
     }
 
-    info = calloc(sizeof(*info), 1);
+    info = calloc(1, sizeof(*info));
     if (info == NULL)
 	    goto oom;
     info->symbol_name = strndup(symbol, symlen);