diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index cd3dddab6..b52f82ebb 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -21,6 +21,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <errno.h>
+#include <stdio.h>
 
 #include <pwd.h>
 #include <grp.h>