# Calculate format=diff
diff --git a/src/unicode.c b/src/unicode.c
index 25e200c..b848867 100644
--- a/src/unicode.c
+++ b/src/unicode.c
@@ -25,6 +25,8 @@
  *  defines the routines used to manipulate Unicode strings and characters
  */
 
+#undef HAVE_CONFIG_H
 #include <fribidi/fribidi.h>
+#define HAVE_CONFIG_H
 
 #include "internal.h"