         }
     }
 
-    private func shouldEnableStartSignal(countProperty: MutableProperty<Int>, reviewType: ReviewType) -> Signal<Bool, NoError> {
-        return countProperty.signal
-            .combineLatest(with: currentReviewType.signal)
-            .map { (count:Int, inProgressReview:ReviewType?) -> Bool in
-                return inProgressReview == nil && count > 0
-        }
+    private func shouldEnableStartSignal(countProperty: MutableProperty<Int>,
+                                         nonReadyCountProperty: MutableProperty<Int>,
+                                         reviewType: ReviewType) -> Signal<Bool, NoError> {
+        
+        let result = Property.combineLatest(countProperty, nonReadyCountProperty, currentReviewType)
+            .map { (count:Int, nonReadyCount: Int, inProgressReview:ReviewType?) -> Bool in
+                return inProgressReview == nil && (count - nonReadyCount) > 0
+        }
+        return result.signal
     }
 
     func saveSession(startSession: StartedSession?) {

        let nonReadyCountProperty: MutableProperty<Int> = MutableProperty(0)
        
        shouldEnable <~ shouldEnableStartSignal(countProperty: countProperty,
                                                reviewType: reviewType)
        
        let action = StartActionType(enabledIf: shouldEnable) { _ in

            
            button.reactive.title(for: .normal) <~ setup.cardCount.combineLatest(with: setup.nonReadyCount).map { "\(max($0 - $1, 0))" }
            
            view.reactive.backgroundColor <~ setup.shouldEnable.combineLatest(with: self.viewModel.currentReviewType).map { (shouldEnable, currentRevType) in
                let colors = SRSViewController.buttonColorsFromReviewType(reviewType)
                if let current = currentRevType,
                    current != reviewType {
                    return colors.disabledColor
                }
                return shouldEnable ? colors.enabledColor : colors.disabledColor
            }
            
            self.viewModel.currentReviewType.uiReact { rtyp in
