diff --git a/src/CashFlows.py b/src/CashFlows.py
index 098e7179b..e07ca3e70 100644
--- a/src/CashFlows.py
+++ b/src/CashFlows.py
@@ -1101,11 +1101,19 @@ def calculateCashflow(self, variables, lifetimeCashflows, lifetime, verbosity):
     ## FIXME what if I have set the values already?
     # get variable values, if needed
     need = {'alpha': self._alpha, 'driver': self._driver}
+    
     # load alpha, driver from variables if need be
     need = self.loadFromVariables(need, variables, lifetimeCashflows, lifetime)
     # for Capex, use m * alpha * (D/D')^X
     alpha = need['alpha']
     driver = need['driver']
+    # check if not-zero alpha > 1
+    maskAlpha = np.where(alpha != 0.0, )[0]     
+    if len(maskAlpha) > 1:
+      if len(np.where(driver != 0.0, )[0]) == 1:
+        val = driver[np.where(driver != 0.0, )]
+        driver[maskAlpha] = val
+        
     reference = self.getParam('reference')
     if reference is None:
       reference = 1.0