diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 2e0f166d4f..d56ae4570d 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -1,3 +1,5 @@
+#include "config.h"
+
 #include "references.hh"
 #include "pathlocks.hh"
 #include "misc.hh"
@@ -29,8 +31,6 @@
 
 
 /* Includes required for chroot support. */
-#include "config.h"
-
 #if HAVE_SYS_PARAM_H
 #include <sys/param.h>
 #endif
diff --git a/src/libutil/archive.cc b/src/libutil/archive.cc
index f30e5b7cf6..8fde4328c4 100644
--- a/src/libutil/archive.cc
+++ b/src/libutil/archive.cc
@@ -1,3 +1,5 @@
+#include "config.h"
+
 #include <cerrno>
 #include <algorithm>
 #include <vector>
@@ -12,8 +14,6 @@
 #include "archive.hh"
 #include "util.hh"
 
-#include "config.h"
-
 
 namespace nix {
 
diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index d7d3e5edf8..a5d0445c14 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -1,6 +1,8 @@
 #ifndef __UTIL_H
 #define __UTIL_H
 
+#include "config.h"
+
 #include "types.hh"
 
 #include <sys/types.h>