diff --git a/src/include/lib/sort_template.h b/src/include/lib/sort_template.h
index b84b20627f..3122a93009 100644
--- a/src/include/lib/sort_template.h
+++ b/src/include/lib/sort_template.h
@@ -407,6 +407,7 @@ loop:
 #undef DO_SORT
 #undef DO_SWAP
 #undef DO_SWAPN
+#undef ST_CHECK_FOR_INTERRUPTS
 #undef ST_COMPARATOR_TYPE_NAME
 #undef ST_COMPARE
 #undef ST_COMPARE_ARG_TYPE