diff --git a/streamApp/Makefile b/streamApp/Makefile
index 20963bd..c3a827d 100644
--- a/streamApp/Makefile
+++ b/streamApp/Makefile
@@ -42,10 +42,12 @@ PROD_SRCS_vxWorks = -nil-
 PROD_LIBS = stream
 
 ifdef ASYN
-# edit asynRegistrars.dbd if necessary
-streamApp_DBD += asynRegistrars.dbd
-# add asynRecord.dbd if you like
-streamApp_DBD += asynRecord.dbd
+streamApp_DBD += asyn.dbd
+streamApp_DBD += drvAsynIPPort.dbd
+streamApp_DBD += drvAsynSerialPort.dbd
+# vxi11 support is optional in recent asyn versions
+#streamApp_DBD += drvVxi11.dbd
+
 PROD_LIBS += asyn
 # cygwin needs separate RPC library for asyn
 PROD_SYS_LIBS_cygwin32 += $(CYGWIN_RPC_LIB)
diff --git a/streamApp/asynRegistrars.dbd b/streamApp/asynRegistrars.dbd
deleted file mode 100644
index 5d2b750..0000000
--- a/streamApp/asynRegistrars.dbd
+++ /dev/null
@@ -1,9 +0,0 @@
-registrar(asynRegister)
-registrar(asynInterposeFlushRegister)
-registrar(asynInterposeEosRegister)
-
-# asynDriver up to version 4-16 does not support serial port for Windows!
-registrar(drvAsynSerialPortRegisterCommands)
-registrar(drvAsynIPPortRegisterCommands)
-registrar(drvAsynIPServerPortRegisterCommands)
-registrar(vxi11RegisterCommands)