diff --git a/src/utils/FormatUtils.cpp b/src/utils/FormatUtils.cpp
index 90c5d1f..e71fbdb 100644
--- a/src/utils/FormatUtils.cpp
+++ b/src/utils/FormatUtils.cpp
@@ -1,6 +1,7 @@
 #include "FormatUtils.hpp"
 #include <drm_fourcc.h>
 #include <xf86drm.h>
+#include <cstdlib>
 
 std::string fourccToName(uint32_t drmFormat) {
     auto        fmt  = drmGetFormatName(drmFormat);