diff --git a/api-webapp/src/main/kotlin/org/jeudego/pairgoth/pairing/Random.kt b/api-webapp/src/main/kotlin/org/jeudego/pairgoth/pairing/Random.kt
index 0a0af21..35a32b7 100644
--- a/api-webapp/src/main/kotlin/org/jeudego/pairgoth/pairing/Random.kt
+++ b/api-webapp/src/main/kotlin/org/jeudego/pairgoth/pairing/Random.kt
@@ -3,7 +3,7 @@ package org.jeudego.pairgoth.pairing
 import org.jeudego.pairgoth.model.Pairable
 import org.jeudego.pairgoth.pairing.solver.BaseSolver
 
-fun detRandom(max: Double, p1: Pairable, p2: Pairable): Double {
+fun detRandom(max: Double, p1: Pairable, p2: Pairable, symmetric: Boolean): Double {
     var inverse = false
     var name1 = p1.fullName("")
     var name2 = p2.fullName("")
@@ -15,7 +15,8 @@ fun detRandom(max: Double, p1: Pairable, p2: Pairable): Double {
         c.code.toDouble() * (i + 1)
     }.sum() * 1234567 % (max + 1)
     // we want the symmetry, except when explicitly asked for a legacy asymmetric detRandom, for tests
-    if (inverse && BaseSolver.asymmetricDetRandom) {
+    // if (inverse && BaseSolver.asymmetricDetRandom) {
+    if (inverse && !symmetric) {
         nR = max - nR
     }
     return nR
diff --git a/api-webapp/src/main/kotlin/org/jeudego/pairgoth/pairing/solver/BaseSolver.kt b/api-webapp/src/main/kotlin/org/jeudego/pairgoth/pairing/solver/BaseSolver.kt
index a44e6db..adcbf1a 100644
--- a/api-webapp/src/main/kotlin/org/jeudego/pairgoth/pairing/solver/BaseSolver.kt
+++ b/api-webapp/src/main/kotlin/org/jeudego/pairgoth/pairing/solver/BaseSolver.kt
@@ -210,7 +210,7 @@ sealed class BaseSolver(
     }
 
     open fun BaseCritParams.applyRandom(p1: Pairable, p2: Pairable): Double {
-        val score =  if (deterministic) detRandom(random, p1, p2)
+        val score =  if (deterministic) detRandom(random, p1, p2, true)
         else nonDetRandom(random)
         return score
     }
@@ -404,9 +404,9 @@ sealed class BaseSolver(
                         val rand =
                             if (asymmetricDetRandom && p1.fullName() > p2.fullName()) {
                                 // for old tests to pass
-                                detRandom(randRange, p2, p1)
+                                detRandom(randRange, p2, p1, false)
                             } else {
-                                detRandom(randRange, p1, p2)
+                                detRandom(randRange, p1, p2, true)
                             }
                         maxSeedingWeight - rand
                     } else {
@@ -546,7 +546,7 @@ sealed class BaseSolver(
             } else if (p1.colorBalance < p2.colorBalance) {
                 score = 1.0
             } else { // choose color from a det random
-                if (detRandom(1.0, p1, p2) === 0.0) {
+                if (detRandom(1.0, p1, p2, false) === 0.0) {
                     score = 1.0
                 } else {
                     score = -1.0