diff --git a/src/dircolors.c b/src/dircolors.c
index 38e1c5071..66e9b5535 100644
--- a/src/dircolors.c
+++ b/src/dircolors.c
@@ -27,6 +27,7 @@
 
 #include "system.h"
 #include "dircolors.h"
+#include "dirname.h"
 #include "error.h"
 #include "getline.h"
 #include "obstack.h"