diff --git a/src/inputs/pipe.c b/src/inputs/pipe.c
index 1d3da628..99c1685a 100644
--- a/src/inputs/pipe.c
+++ b/src/inputs/pipe.c
@@ -30,6 +30,10 @@
  *
  */
 
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdbool.h>