diff --git a/src/utils/color_out.cpp b/src/utils/color_out.cpp
index a320cb681..e49a0578c 100644
--- a/src/utils/color_out.cpp
+++ b/src/utils/color_out.cpp
@@ -41,6 +41,9 @@
 #include "config_win32.h"
 #endif
 
+#include <unistd.h>
+
+#include <cstdarg>
 #include <iostream>
 
 #include "debug.h"
diff --git a/src/utils/misc.cpp b/src/utils/misc.cpp
index a54a836c6..22d235ddb 100644
--- a/src/utils/misc.cpp
+++ b/src/utils/misc.cpp
@@ -42,9 +42,12 @@
 #include "config_win32.h"
 #endif
 
-#include <assert.h>
-#include <limits.h>
-#include <math.h>
+#include <unistd.h>
+
+#include <cassert>
+#include <climits>
+#include <cmath>
+#include <cstring>
 
 #include "debug.h"
 #include "utils/misc.h"