diff --git a/src/include/firebird/FirebirdInterface.idl b/src/include/firebird/FirebirdInterface.idl
index 63cd8f340d..c1f17a346a 100644
--- a/src/include/firebird/FirebirdInterface.idl
+++ b/src/include/firebird/FirebirdInterface.idl
@@ -516,8 +516,6 @@ interface Batch : ReferenceCounted
 	uint getBlobAlignment(Status status);
 	MessageMetadata getMetadata(Status status);
 	void setDefaultBpb(Status status, uint parLength, const uchar* par);
-
-version:	// added after FB4 RC1
 	void close(Status status);
 }
 
diff --git a/src/include/firebird/IdlFbInterfaces.h b/src/include/firebird/IdlFbInterfaces.h
index a903d52f82..37de20117f 100644
--- a/src/include/firebird/IdlFbInterfaces.h
+++ b/src/include/firebird/IdlFbInterfaces.h
@@ -1878,7 +1878,7 @@ namespace Firebird
 		}
 
 	public:
-		static const unsigned VERSION = 4;
+		static const unsigned VERSION = 3;
 
 		static const unsigned char VERSION1 = 1;
 		static const unsigned char TAG_MULTIERROR = 1;
@@ -1967,12 +1967,6 @@ namespace Firebird
 
 		template <typename StatusType> void close(StatusType* status)
 		{
-			if (cloopVTable->version < 4)
-			{
-				StatusType::setVersionError(status, "IBatch", cloopVTable->version, 4);
-				StatusType::checkException(status);
-				return;
-			}
 			StatusType::clearException(status);
 			static_cast<VTable*>(this->cloopVTable)->close(this, status);
 			StatusType::checkException(status);
diff --git a/src/include/gen/Firebird.pas b/src/include/gen/Firebird.pas
index 1da75d627e..d7a12190af 100644
--- a/src/include/gen/Firebird.pas
+++ b/src/include/gen/Firebird.pas
@@ -1513,7 +1513,7 @@ type
 	end;
 
 	IBatch = class(IReferenceCounted)
-		const VERSION = 4;
+		const VERSION = 3;
 		const VERSION1 = Byte(1);
 		const TAG_MULTIERROR = Byte(1);
 		const TAG_RECORD_COUNTS = Byte(2);
@@ -14961,7 +14961,7 @@ initialization
 	IStatementImpl_vTable.createBatch := @IStatementImpl_createBatchDispatcher;
 
 	IBatchImpl_vTable := BatchVTable.create;
-	IBatchImpl_vTable.version := 4;
+	IBatchImpl_vTable.version := 3;
 	IBatchImpl_vTable.addRef := @IBatchImpl_addRefDispatcher;
 	IBatchImpl_vTable.release := @IBatchImpl_releaseDispatcher;
 	IBatchImpl_vTable.add := @IBatchImpl_addDispatcher;