diff --git a/src/util/u_printf.cpp b/src/util/u_printf.cpp
index 81a8c148147..c23265fec96 100644
--- a/src/util/u_printf.cpp
+++ b/src/util/u_printf.cpp
@@ -21,9 +21,9 @@
 //
 // Extract from Serge's printf clover code by airlied.
 
-#include "u_printf.h"
 #include <assert.h>
 #include <stdarg.h>
+#include "u_printf.h"
 #include "util/macros.h"
 
 /* Some versions of MinGW are missing _vscprintf's declaration, although they
diff --git a/src/util/u_printf.h b/src/util/u_printf.h
index 44dcce5529f..d378b13f78f 100644
--- a/src/util/u_printf.h
+++ b/src/util/u_printf.h
@@ -22,6 +22,9 @@
 #ifndef U_PRINTF_H
 #define U_PRINTF_H
 
+#include <stdarg.h>
+#include <stddef.h>
+
 #ifdef __cplusplus
 
 #include <string>