diff --git a/libsrcCC/VDisplay.cc b/libsrcCC/VDisplay.cc
index d2279d42..b06573fa 100644
--- a/libsrcCC/VDisplay.cc
+++ b/libsrcCC/VDisplay.cc
@@ -32,6 +32,7 @@
 #include <vips/intl.h>
 
 #include <cstdlib>
+#include <cstring>
 
 #include <vips/vips.h>
 #include <vips/vipscpp.h>