diff --git a/tests/unit/plugins/test-plugin-api-info.cpp b/tests/unit/plugins/test-plugin-api-info.cpp
index f030e25c8..5dd2c875a 100644
--- a/tests/unit/plugins/test-plugin-api-info.cpp
+++ b/tests/unit/plugins/test-plugin-api-info.cpp
@@ -29,6 +29,7 @@ extern "C"
 #define HAVE_CONFIG_H
 #endif
 #include <unistd.h>
+#include <string.h>
 #include "src/core/weechat.h"
 #include "src/core/wee-config.h"
 #include "src/core/wee-config-file.h"