diff --git a/ChangeLog.adoc b/ChangeLog.adoc
index caa5836a5..ad8ce0651 100644
--- a/ChangeLog.adoc
+++ b/ChangeLog.adoc
@@ -33,6 +33,10 @@ Tests::
 
   * core: add build on macOS in CI
 
+Build::
+
+  * core: fix build on macOS (issue #1662)
+
 [[v3.2]]
 == Version 3.2 (2021-06-13)
 
diff --git a/src/core/wee-dir.c b/src/core/wee-dir.c
index 5949035ff..aae69b267 100644
--- a/src/core/wee-dir.c
+++ b/src/core/wee-dir.c
@@ -26,6 +26,9 @@
 
 /* for nftw() */
 #define _XOPEN_SOURCE 700
+#if defined(__APPLE__)
+#define _DARWIN_C_SOURCE
+#endif
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"