--- a/src/bfile_heuristics.h	Sun Jul 05 12:44:44 2026 +0200
+++ b/src/bfile_heuristics.h	Sun Jul 05 12:45:17 2026 +0200
@@ -27,6 +27,10 @@
 #ifndef BFILE_HEURISTICS_H_
 #define BFILE_HEURISTICS_H_
 
+#if __STDC_VERSION__ < 202311L
+#include <stdbool.h>
+#endif
+
 #define BFILE_IGNORE           0x00
 #define BFILE_LOW_ACCURACY     0x01
 #define BFILE_MEDIUM_ACCURACY  0x02