diff --git a/conf/e3/config.json b/conf/e3/config.json
index a6685a06f..3e443c389 100644
--- a/conf/e3/config.json
+++ b/conf/e3/config.json
@@ -52,7 +52,6 @@
         "world.era": 3,
         "seed.population.min": 8,
         "seed.population.max": 8,
-        "rules.migrants.max": 0,
         "rules.reserve.twophase": true,
         "rules.owners.force_leave": false,
         "rules.monsters.attack_chance": 0.1,
diff --git a/conf/e4/config.json b/conf/e4/config.json
index e407ae21e..654213ede 100644
--- a/conf/e4/config.json
+++ b/conf/e4/config.json
@@ -51,7 +51,6 @@
         "study.speedup": 2,
         "study.from_use": 0.4,
         "world.era": 3,
-        "rules.migrants.max": 0,
         "rules.reserve.twophase": true,
         "rules.owners.force_leave": false,
         "rules.transfermen": false,
diff --git a/res/eressea/races.xml b/res/eressea/races.xml
index 7f6c6d873..98f00f726 100644
--- a/res/eressea/races.xml
+++ b/res/eressea/races.xml
@@ -13,6 +13,7 @@
   <race name="human" magres="0.000000" maxaura="1.000000" regaura="1.000000" recruitcost="75" maintenance="10" weight="1000" capacity="540" speed="1.000000" hp="20" damage="1d5" unarmedattack="-2" unarmeddefense="-2" playerrace="yes" walk="yes" giveperson="yes" giveunit="yes" getitem="yes" equipment="yes">
     <ai splitsize="10000" moverandom="yes" learn="yes"/>
     <function name="itemdrop" value="defaultdrops"/>
+    <param name="migrants.formula" value="1"/>
     <skill name="trade" modifier="1"/>
     <skill name="herbalism" modifier="-1"/>
     <skill name="shipcraft" modifier="1"/>
diff --git a/src/kernel/faction.c b/src/kernel/faction.c
index 597e45b30..288c54569 100755
--- a/src/kernel/faction.c
+++ b/src/kernel/faction.c
@@ -756,24 +756,20 @@ int count_migrants(const faction * f)
     return count_faction(f, COUNT_MIGRANTS);
 }
 
+#define MIGRANTS_NONE 0
+#define MIGRANTS_LOG10 1
+
 int count_maxmigrants(const faction * f)
 {
-    static int migrants = -1;
+    int formula = get_param_int(f->race->parameters, "migrants.formula", 0);
 
-    if (migrants < 0) {
-        migrants = config_get_int("rules.migrants.max", INT_MAX);
-    }
-    if (migrants == INT_MAX) {
-        int x = 0;
-        if (f->race == get_race(RC_HUMAN)) {
-            int nsize = count_all(f);
-            if (nsize > 0) {
-                x = (int)(log10(nsize / 50.0) * 20);
-                if (x < 0)
-                    x = 0;
-            }
+    if (formula == MIGRANTS_LOG10) {
+        int nsize = count_all(f);
+        if (nsize > 0) {
+            int x = (int)(log10(nsize / 50.0) * 20);
+            if (x < 0) x = 0;
+            return x;
         }
-        return x;
     }
-    return migrants;
+    return 0;
 }