diff --git a/devexec.c b/devexec.c
index 70950790..9c5718e9 100644
--- a/devexec.c
+++ b/devexec.c
@@ -450,12 +450,12 @@
                         }   
                         break;                                     
            case HWBusy:
-                        if(pCountInt != NULL)
+                        if(pDrivInt != NULL)
                         {
                           isDriving = 1;
                         }
-			if(pDrivInt == NULL)
-			{
+                        else if(pCountInt != NULL)
+                        {
                           isCounting = 1;
                         }
                         self->iStatus = DEVBUSY;