diff --git a/lib/plist.c b/lib/plist.c
index 692e5c3c..54eb380b 100644
--- a/lib/plist.c
+++ b/lib/plist.c
@@ -336,7 +336,7 @@ find_string_in_array(prop_array_t array, const char *str, int mode)
 	bool found = false;
 
 	assert(array != NULL);
-	assert(pkgname != NULL);
+	assert(str != NULL);
 
 	iter = prop_array_iterator(array);
 	if (iter == NULL)
diff --git a/lib/util.c b/lib/util.c
index 7d0f469c..928c2f23 100644
--- a/lib/util.c
+++ b/lib/util.c
@@ -168,7 +168,7 @@ xbps_check_is_installed_pkg_by_pattern(const char *pattern)
 	prop_dictionary_t dict;
 	pkg_state_t state;
 
-	assert(pkg != NULL);
+	assert(pattern != NULL);
 
 	dict = xbps_find_pkg_dict_installed(pattern, true);
 	if (dict == NULL) {