diff --git a/install.cpp b/install.cpp
index 5a439a1d..c76da205 100644
--- a/install.cpp
+++ b/install.cpp
@@ -323,7 +323,7 @@ really_install_package(const char *path, bool* wipe_cache, bool needs_mount,
     }
 
     // Try to open the package.
-    ZipArchive zip;
+    ZipArchive zip = {};
     err = mzOpenZipArchive(map.addr, map.length, &zip);
     if (err != 0) {
         LOGE("Can't open %s\n(%s)\n", path, err != -1 ? strerror(err) : "bad");
diff --git a/updater/updater.cpp b/updater/updater.cpp
index e956dd55..96755735 100644
--- a/updater/updater.cpp
+++ b/updater/updater.cpp
@@ -77,7 +77,7 @@ int main(int argc, char** argv) {
         printf("failed to map package %s\n", argv[3]);
         return 3;
     }
-    ZipArchive za;
+    ZipArchive za = {};
     int err;
     err = mzOpenZipArchive(map.addr, map.length, &za);
     if (err != 0) {