diff --git a/src/plugin.cpp b/src/plugin.cpp
index d21de1ae..650e551c 100644
--- a/src/plugin.cpp
+++ b/src/plugin.cpp
@@ -24,6 +24,11 @@
 
 #include "plugin.hpp"
 
+#if LIBZIP_VERSION_MAJOR == 0 && LIBZIP_VERSION_MINOR <= 10
+typedef zip zip_t;
+typedef zip_file zip_file_t;
+typedef struct zip_stat zip_stat_t;
+#endif
 
 namespace rack {
 
@@ -168,7 +173,7 @@ static void extract_zip(const char *dir, int zipfd) {
 	if (!za) return;
 	if (err) goto cleanup;
 
-	for (int i = 0; i < zip_get_num_entries(za, 0); i++) {
+	for (zip_uint64_t i = 0; i < zip_get_num_entries(za, 0); i++) {
 		zip_stat_t zs;
 		err = zip_stat_index(za, i, 0, &zs);
 		if (err) goto cleanup;