diff -r b5c32391802f -r 5b24ad070bb0 src/cx/tree.h
--- a/src/cx/tree.h	Sun Nov 30 13:29:07 2025 +0100
+++ b/src/cx/tree.h	Sun Nov 30 13:29:35 2025 +0100
@@ -1096,7 +1096,7 @@
  * @see cxTreeIterate()
  */
 cx_attr_nonnull cx_attr_nodiscard
-CxTreeVisitor cxTreeVisit(CxTree *tree);
+CX_EXPORT CxTreeVisitor cxTreeVisit(CxTree *tree);
 
 /**
  * Sets the (new) parent of the specified child.