1 files changed, 2 insertions, 0 deletions
diff --git a/apt-pkg/cdrom.h b/apt-pkg/cdrom.h
index c58593550..f4a873808 100644
--- a/apt-pkg/cdrom.h
+++ b/apt-pkg/cdrom.h
@@ -4,6 +4,8 @@
 #include<string>
 #include<vector>
 
+#include <stddef.h>
+
 #ifndef APT_8_CLEANER_HEADERS
 #include <apt-pkg/init.h>
 using namespace std;