diff --git a/hypopg_table.c b/hypopg_table.c
index 725b3ae..8ba6e0a 100644
--- a/hypopg_table.c
+++ b/hypopg_table.c
@@ -2254,7 +2254,7 @@ hypo_injectHypotheticalPartitioning(PlannerInfo *root,
 #endif
 }
 
-#if PGVERSION_NUM < 110000
+#if PG_VERSION_NUM < 110000
 /*
  * If this rel is need not be scanned, we have to mark it as dummy to omit it
  * from the appendrel