diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c
index bf9284b9a1..b1e06ea364 100644
--- a/tests/qtest/libqtest.c
+++ b/tests/qtest/libqtest.c
@@ -2146,7 +2146,7 @@ bool mkimg(const char *file, const char *fmt, unsigned size_mb)
 bool qtest_verbose(const char *domain)
 {
     const char *log = getenv("QTEST_LOG");
-    char *found;
+    const char *found;
 
     assert(domain);