diff --git a/src/common/demangle.cpp b/src/common/demangle.cpp
index 8f76a884a8..d5ebc23c0a 100644
--- a/src/common/demangle.cpp
+++ b/src/common/demangle.cpp
@@ -5,6 +5,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <string>
+#include <cstdlib>
 #include <string_view>
 #ifdef _WIN32
 #include <llvm/Demangle/Demangle.h>