diff --git a/src/main/java/com/powsybl/openloadflow/network/action/LfPhaseTapChangerAction.java b/src/main/java/com/powsybl/openloadflow/network/action/LfPhaseTapChangerAction.java
index 697fb07dc3..3361706d71 100644
--- a/src/main/java/com/powsybl/openloadflow/network/action/LfPhaseTapChangerAction.java
+++ b/src/main/java/com/powsybl/openloadflow/network/action/LfPhaseTapChangerAction.java
@@ -32,12 +32,8 @@ public boolean apply(LfNetwork network, LfContingency contingency, LfNetworkPara
             if (branch.getPhaseControl().isPresent()) {
                 LOGGER.warn("Phase tap changer tap position action: phase control is present on the tap changer, tap position could be overriden.");
             }
-            if (branch.getPiModel() instanceof SimplePiModel) {
-                throw new UnsupportedOperationException("Tap position action: only one tap in branch " + branch.getId());
-            } else {
-                branch.getPiModel().setTapPosition(this.change.getNewTapPosition());
-                return true;
-            }
+            branch.getPiModel().setTapPosition(this.change.getNewTapPosition());
+            return true;
         }
         return false;
     }
diff --git a/src/main/java/com/powsybl/openloadflow/network/action/LfRatioTapChangerAction.java b/src/main/java/com/powsybl/openloadflow/network/action/LfRatioTapChangerAction.java
index 2ae787b0db..442fd631bb 100644
--- a/src/main/java/com/powsybl/openloadflow/network/action/LfRatioTapChangerAction.java
+++ b/src/main/java/com/powsybl/openloadflow/network/action/LfRatioTapChangerAction.java
@@ -32,12 +32,8 @@ public boolean apply(LfNetwork network, LfContingency contingency, LfNetworkPara
             if (branch.getVoltageControl().isPresent()) {
                 LOGGER.warn("Ratio tap changer tap position action: voltage control is present on the tap changer, tap position could be overriden.");
             }
-            if (branch.getPiModel() instanceof SimplePiModel) {
-                throw new UnsupportedOperationException("Tap position action: only one tap in branch " + branch.getId());
-            } else {
-                branch.getPiModel().setTapPosition(this.change.getNewTapPosition());
-                return true;
-            }
+            branch.getPiModel().setTapPosition(this.change.getNewTapPosition());
+            return true;
         }
         return false;
     }