diff --git a/app/src/main/java/net/pokeranalytics/android/model/realm/ComputableResult.kt b/app/src/main/java/net/pokeranalytics/android/model/realm/ComputableResult.kt
index a4c72be8..fd3aa17a 100644
--- a/app/src/main/java/net/pokeranalytics/android/model/realm/ComputableResult.kt
+++ b/app/src/main/java/net/pokeranalytics/android/model/realm/ComputableResult.kt
@@ -9,7 +9,7 @@ open class ComputableResult() : RealmObject(), Computable, Filterable {
 
 	override var ratedNet: Double = 0.0
 
-	override var bbNet: Double = 0.0
+	override var bbNet: BB = 0.0
 
 	override var hasBigBlind: Int = 0
 
@@ -19,7 +19,7 @@ open class ComputableResult() : RealmObject(), Computable, Filterable {
 
 	override var estimatedHands: Double = 0.0
 
-	override var bbPer100Hands: Double = 0.0
+	override var bbPer100Hands: BB = 0.0
 
 	override var sessionSet: SessionSet? = null
 
diff --git a/app/src/main/java/net/pokeranalytics/android/model/realm/Session.kt b/app/src/main/java/net/pokeranalytics/android/model/realm/Session.kt
index 0cbb2416..8bf81de2 100644
--- a/app/src/main/java/net/pokeranalytics/android/model/realm/Session.kt
+++ b/app/src/main/java/net/pokeranalytics/android/model/realm/Session.kt
@@ -42,9 +42,12 @@ import java.util.*
 import java.util.Currency
 import kotlin.collections.ArrayList
 
+typealias BB = Double
+
 open class Session : RealmObject(), Savable, Editable, StaticRowRepresentableDataSource, RowRepresentable, Timed,
     TimeFilterable, Filterable {
 
+
 	enum class Type {
 		CASH_GAME,
 		TOURNAMENT
@@ -293,7 +296,7 @@ open class Session : RealmObject(), Savable, Editable, StaticRowRepresentableDat
 	/**
 	 * The net result in big blinds
 	 */
-	val bbNet: Double
+	val bbNet: BB
 		get() {
 			val bb = this.cgBigBlind; val result = this.result
 			if (bb != null && result != null) {
@@ -367,7 +370,7 @@ open class Session : RealmObject(), Savable, Editable, StaticRowRepresentableDat
 			throw ModelException("Session should have an existing Result relationship")
 		}
 
-	val bbHourlyRate: Double
+	val bbHourlyRate: BB
 		get() {
 			return this.bbNet / this.hourlyDuration
 		}
diff --git a/app/src/main/java/net/pokeranalytics/android/model/realm/SessionSet.kt b/app/src/main/java/net/pokeranalytics/android/model/realm/SessionSet.kt
index 598d66fb..9774e1b7 100644
--- a/app/src/main/java/net/pokeranalytics/android/model/realm/SessionSet.kt
+++ b/app/src/main/java/net/pokeranalytics/android/model/realm/SessionSet.kt
@@ -76,7 +76,7 @@ open class SessionSet() : RealmObject(), Timed, Filterable {
 
     var estimatedHands: Double = 0.0
 
-    var bbNet: Double = 0.0
+    var bbNet: BB = 0.0
 
 	override fun formattedValue(stat: Stat, context: Context) : TextFormat {
 		return when (stat) {