diff --git a/src/basic/forward.h b/src/basic/forward.h
index df3bdee233..5ca540ae01 100644
--- a/src/basic/forward.h
+++ b/src/basic/forward.h
@@ -6,6 +6,7 @@
 #include <errno.h>              /* IWYU pragma: export */
 #include <inttypes.h>           /* IWYU pragma: export */
 #include <limits.h>             /* IWYU pragma: export */
+#include <paths.h>              /* IWYU pragma: export */
 #include <stdarg.h>             /* IWYU pragma: export */
 #include <stdbool.h>            /* IWYU pragma: export */
 #include <stddef.h>             /* IWYU pragma: export */