diff --git a/src/common/backend/nodes/copyfuncs.cpp b/src/common/backend/nodes/copyfuncs.cpp
index b90803a29..33afbb0e1 100644
--- a/src/common/backend/nodes/copyfuncs.cpp
+++ b/src/common/backend/nodes/copyfuncs.cpp
@@ -6681,6 +6681,7 @@ static DropDirectoryStmt* _copyDropDirectoryStmt(const DropDirectoryStmt* from)
     DropDirectoryStmt* newnode = makeNode(DropDirectoryStmt);
 
     COPY_STRING_FIELD(directoryname);
+    COPY_SCALAR_FIELD(missing_ok);
 
     return newnode;
 }
diff --git a/src/common/backend/nodes/equalfuncs.cpp b/src/common/backend/nodes/equalfuncs.cpp
index c36f2e84a..53b34a30b 100644
--- a/src/common/backend/nodes/equalfuncs.cpp
+++ b/src/common/backend/nodes/equalfuncs.cpp
@@ -3133,6 +3133,7 @@ static bool _equalCreateDirectoryStmt(const CreateDirectoryStmt* a, const Create
 static bool _equalDropDirectoryStmt(const DropDirectoryStmt* a, const DropDirectoryStmt* b)
 {
     COMPARE_STRING_FIELD(directoryname);
+    COMPARE_SCALAR_FIELD(missing_ok);
 
     return true;
 }