diff --git a/configure.ac b/configure.ac
index 5d8a719133da8293dac7a7d62eedb485dd32fda1..afffe705927a12166f948fe9b9ad7b7812a3dbd3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -101,12 +101,17 @@ AC_LANG_POP(C++)
 
 # Check for chroot support (requires chroot() and bind mounts).
 AC_CHECK_FUNCS([chroot])
-AC_CHECK_HEADERS([sys/mount.h])
+AC_CHECK_HEADERS([sys/param.h], [], [], [])
+AC_CHECK_HEADERS([sys/mount.h], [], [],
+[#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+# endif
+])
 
 
 # Check for <locale>
 AC_LANG_PUSH(C++)
-AC_CHECK_HEADERS([locale])
+AC_CHECK_HEADERS([locale], [], [], [])
 AC_LANG_POP(C++)
 
 
diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 533883dc5298c470bb4749df340f61f40ec338f0..36e3b5e1dd8b590757c6ff13dee082290e8959c3 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -24,13 +24,17 @@
 #include <pwd.h>
 #include <grp.h>
 
+
+/* Includes required for chroot support. */
 #include "config.h"
 
+#if HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
 #if HAVE_SYS_MOUNT_H
 #include <sys/mount.h>
 #endif
 
-
 #define CHROOT_ENABLED HAVE_CHROOT && HAVE_SYS_MOUNT_H && defined(MS_BIND)