diff --git a/core/src/test/kotlin/fr/sncf/osrd/stdcm/infra_exploration/InfraExplorerTests.kt b/core/src/test/kotlin/fr/sncf/osrd/stdcm/infra_exploration/InfraExplorerTests.kt
index 73d8d24f102..f2f17b64e50 100644
--- a/core/src/test/kotlin/fr/sncf/osrd/stdcm/infra_exploration/InfraExplorerTests.kt
+++ b/core/src/test/kotlin/fr/sncf/osrd/stdcm/infra_exploration/InfraExplorerTests.kt
@@ -3,7 +3,9 @@ package fr.sncf.osrd.stdcm.infra_exploration
 import fr.sncf.osrd.api.pathfinding.constraints.ElectrificationConstraints
 import fr.sncf.osrd.graph.PathfindingEdgeLocationId
 import fr.sncf.osrd.sim_infra.api.BlockId
+import fr.sncf.osrd.sim_infra.api.BlockInfra
 import fr.sncf.osrd.sim_infra.api.DirDetectorId
+import fr.sncf.osrd.sim_infra.utils.getBlockExit
 import fr.sncf.osrd.sim_infra.utils.routesOnBlock
 import fr.sncf.osrd.train.TestTrains
 import fr.sncf.osrd.utils.Direction
@@ -11,6 +13,7 @@ import fr.sncf.osrd.utils.DummyInfra
 import fr.sncf.osrd.utils.Helpers
 import fr.sncf.osrd.utils.units.Offset
 import fr.sncf.osrd.utils.units.meters
+import fr.sncf.osrd.utils.units.sumOffsets
 import kotlin.test.assertEquals
 import kotlin.test.assertFalse
 import kotlin.test.assertNotEquals
@@ -27,13 +30,14 @@ class InfraExplorerTests {
          */
         val infra = DummyInfra()
         val block = infra.addBlock("a", "b")
+        val endOffset = infra.getBlockLength(block)
 
         val explorers =
             initInfraExplorer(
                 infra,
                 infra,
                 PathfindingEdgeLocationId(block, Offset(0.meters)),
-                listOf(block)
+                listOf(setOf(PathfindingEdgeLocationId(block, endOffset)))
             )
         assertEquals(1, explorers.size)
         val explorer = explorers.first()
@@ -54,6 +58,7 @@ class InfraExplorerTests {
                 infra.addBlock("c", "d"),
                 infra.addBlock("d", "e"),
             )
+        val endOffset = blocks.map { infra.getBlockLength(it) }.sumOffsets()
 
         // a --> b
         val firstExplorers =
@@ -61,7 +66,7 @@ class InfraExplorerTests {
                 infra,
                 infra,
                 PathfindingEdgeLocationId(blocks[0], Offset(0.meters)),
-                listOf(blocks.last())
+                listOf(setOf(PathfindingEdgeLocationId(blocks.last(), endOffset)))
             )
         assertEquals(1, firstExplorers.size)
         var explorer = firstExplorers.first()
diff --git a/core/src/test/kotlin/fr/sncf/osrd/stdcm/preprocessing/BlockAvailabilityTests.kt b/core/src/test/kotlin/fr/sncf/osrd/stdcm/preprocessing/BlockAvailabilityTests.kt
index 6f7efaab8e4..da208ebbd0b 100644
--- a/core/src/test/kotlin/fr/sncf/osrd/stdcm/preprocessing/BlockAvailabilityTests.kt
+++ b/core/src/test/kotlin/fr/sncf/osrd/stdcm/preprocessing/BlockAvailabilityTests.kt
@@ -20,6 +20,7 @@ import fr.sncf.osrd.utils.Direction
 import fr.sncf.osrd.utils.Helpers
 import fr.sncf.osrd.utils.units.Offset
 import fr.sncf.osrd.utils.units.meters
+import fr.sncf.osrd.utils.units.sumOffsets
 import kotlin.Double.Companion.POSITIVE_INFINITY
 import kotlin.test.assertEquals
 import kotlin.test.assertNotNull
@@ -109,11 +110,12 @@ class BlockAvailabilityTests {
         assert(nBlocksInPath >= nBlocksSimulated)
         assert(nBlocksInPath <= 5)
 
+        val endOffset = blocks.map { infra.blockInfra.getBlockLength(it) }.sumOffsets()
         var infraExplorer =
             initInfraExplorerWithEnvelope(
                     infra,
                     PathfindingEdgeLocationId(blocks[0], Offset(0.meters)),
-                    listOf(blocks.last()),
+                    listOf(setOf(PathfindingEdgeLocationId(blocks.last(), endOffset))),
                     rollingStock
                 )
                 .find { filterExplorer(it) }!!
@@ -583,11 +585,12 @@ class BlockAvailabilityTests {
      */
     @Test
     fun testNotStartingOnRouteFirstBlock() {
+        val endOffset = blocks.map { infra.blockInfra.getBlockLength(it) }.sumOffsets()
         var explorer =
             initInfraExplorerWithEnvelope(
                     infra,
                     PathfindingEdgeLocationId(blocks[2], Offset(50.meters)),
-                    listOf(blocks.last()),
+                    listOf(setOf(PathfindingEdgeLocationId(blocks.last(), endOffset))),
                     REALISTIC_FAST_TRAIN
                 )
                 .first { filterExplorer(it) }