tests BUGFIX include compatibility code to run in different environments
diff --git a/tests/src/test_tree_schema_helpers.c b/tests/src/test_tree_schema_helpers.c
index 02d571a..c6c09e5 100644
--- a/tests/src/test_tree_schema_helpers.c
+++ b/tests/src/test_tree_schema_helpers.c
@@ -13,6 +13,7 @@
  */
 
 #include "../../src/common.c"
+#include "../../src/compat.c"
 #include "../../src/log.c"
 #include "../../src/set.c"
 #include "../../src/parser_yang.c"