diff --git a/util/epist/config.cc b/util/epist/config.cc
index f4f0bac6..cefa28cc 100644
--- a/util/epist/config.cc
+++ b/util/epist/config.cc
@@ -20,6 +20,10 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
+#ifdef    HAVE_CONFIG_H
+#  include "../../config.h"
+#endif // HAVE_CONFIG_H
+
 #include "config.hh"
 
 using std::string;
diff --git a/util/epist/epist.l b/util/epist/epist.l
index e545054a..c3db54b8 100644
--- a/util/epist/epist.l
+++ b/util/epist/epist.l
@@ -1,4 +1,8 @@
 %{
+#ifdef    HAVE_CONFIG_H
+#  include "../../config.h"
+#endif // HAVE_CONFIG_H
+
 #include <stdio.h>
 #include <string.h>
 #include "yacc_parser.hh"
diff --git a/util/epist/keytree.cc b/util/epist/keytree.cc
index 30efa1be..009cb355 100644
--- a/util/epist/keytree.cc
+++ b/util/epist/keytree.cc
@@ -20,6 +20,10 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
+#ifdef    HAVE_CONFIG_H
+#  include "../../config.h"
+#endif // HAVE_CONFIG_H
+
 #include "keytree.hh"
 #include "epist.hh"
 #include "config.hh"
diff --git a/util/epist/parser.cc b/util/epist/parser.cc
index 7741d2f7..d1df9f1f 100644
--- a/util/epist/parser.cc
+++ b/util/epist/parser.cc
@@ -20,6 +20,10 @@
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
+#ifdef    HAVE_CONFIG_H
+#  include "../../config.h"
+#endif // HAVE_CONFIG_H
+
 extern "C" {
 #include <stdio.h>
 #include <string.h>