SafeVector.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/SafeVector.h b/SafeVector.h
index abf4b64..9c3292e 100644
--- a/SafeVector.h
+++ b/SafeVector.h
@@ -8,6 +8,7 @@
 #ifndef SAFEVECTOR_H
 #define SAFEVECTOR_H
 
+#include <cstddef>
 #include <cassert>
 #include <vector>