diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index 8aa113796d..3c367c0808 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -9,6 +9,7 @@
 
 #include <iostream>
 #include <algorithm>
+#include <cstring>
 
 #include <sys/types.h>
 #include <sys/stat.h>