diff --git a/GenICamApp/src/ADGenICam.cpp b/GenICamApp/src/ADGenICam.cpp
index 94bb84c..c19cc78 100644
--- a/GenICamApp/src/ADGenICam.cpp
+++ b/GenICamApp/src/ADGenICam.cpp
@@ -39,11 +39,12 @@ static const char *driverName = "ADGenICam";
  * \param[in] priority The EPICS thread priority for this driver.  0=use asyn default.
  * \param[in] stackSize The size of the stack for the EPICS port thread. 0=use asyn default.
  */
-ADGenICam::ADGenICam(const char *portName, size_t maxMemory, int priority, int stackSize)
+ADGenICam::ADGenICam(const char *portName, size_t maxMemory, int priority, int stackSize, int asynFlags)
     : ADDriver(portName, 1, 0, 0, maxMemory,
             asynInt64Mask | asynEnumMask,
             asynInt64Mask | asynEnumMask,
-            ASYN_CANBLOCK, 1, priority, stackSize),
+            asynFlags | ASYN_CANBLOCK,
+            1, priority, stackSize),
     mGCFeatureSet(this, pasynUserSelf), mFirstDrvUserCreateCall(true)
 {
     //static const char *functionName = "ADGenICam";
diff --git a/GenICamApp/src/ADGenICam.h b/GenICamApp/src/ADGenICam.h
index 9a19630..fb769f6 100644
--- a/GenICamApp/src/ADGenICam.h
+++ b/GenICamApp/src/ADGenICam.h
@@ -24,7 +24,7 @@ typedef struct {
 class ADGENICAM_API ADGenICam : public ADDriver
 {
 public:
-    ADGenICam(const char *portName, size_t maxMemory, int priority, int stackSize);
+    ADGenICam(const char *portName, size_t maxMemory, int priority, int stackSize, int asynFlags = 0);
 
     // virtual methods to override from ADDriver
     virtual asynStatus writeInt32( asynUser *pasynUser, epicsInt32 value);