diff --git a/backend/application/syson-sysml-export/src/main/java/org/eclipse/syson/sysml/export/utils/SysMLKeywordSwitch.java b/backend/application/syson-sysml-export/src/main/java/org/eclipse/syson/sysml/export/utils/SysMLKeywordSwitch.java
index 3f9a3114f..6707439d4 100644
--- a/backend/application/syson-sysml-export/src/main/java/org/eclipse/syson/sysml/export/utils/SysMLKeywordSwitch.java
+++ b/backend/application/syson-sysml-export/src/main/java/org/eclipse/syson/sysml/export/utils/SysMLKeywordSwitch.java
@@ -18,6 +18,8 @@
 import org.eclipse.syson.sysml.ActionDefinition;
 import org.eclipse.syson.sysml.ActionUsage;
 import org.eclipse.syson.sysml.ActorMembership;
+import org.eclipse.syson.sysml.AllocationDefinition;
+import org.eclipse.syson.sysml.AllocationUsage;
 import org.eclipse.syson.sysml.AssertConstraintUsage;
 import org.eclipse.syson.sysml.AttributeDefinition;
 import org.eclipse.syson.sysml.AttributeUsage;
@@ -55,6 +57,8 @@ public class SysMLKeywordSwitch extends SysmlSwitch<String> {
 
     private static final String PART_KEYWORD = "part";
 
+    private static final String ALLOCATION_KEYWORD = "allocation";
+
     private static final String PORT_KEYWORD = "port";
 
     private static final String INTERFACE_KEYWORD = "interface";
@@ -168,6 +172,16 @@ public String casePartUsage(PartUsage object) {
         return PART_KEYWORD;
     }
 
+    @Override
+    public String caseAllocationDefinition(AllocationDefinition object) {
+        return ALLOCATION_KEYWORD;
+    }
+
+    @Override
+    public String caseAllocationUsage(AllocationUsage object) {
+        return ALLOCATION_KEYWORD;
+    }
+
     @Override
     public String caseReferenceUsage(ReferenceUsage object) {
         if (object.getOwningMembership() instanceof SubjectMembership) {
diff --git a/backend/application/syson-sysml-export/src/test/java/org/eclipse/syson/sysml/export/SysMLElementSerializerTest.java b/backend/application/syson-sysml-export/src/test/java/org/eclipse/syson/sysml/export/SysMLElementSerializerTest.java
index 3badbfa2f..7c6e3179d 100644
--- a/backend/application/syson-sysml-export/src/test/java/org/eclipse/syson/sysml/export/SysMLElementSerializerTest.java
+++ b/backend/application/syson-sysml-export/src/test/java/org/eclipse/syson/sysml/export/SysMLElementSerializerTest.java
@@ -21,6 +21,8 @@
 import org.eclipse.syson.sysml.ActionDefinition;
 import org.eclipse.syson.sysml.ActionUsage;
 import org.eclipse.syson.sysml.ActorMembership;
+import org.eclipse.syson.sysml.AllocationDefinition;
+import org.eclipse.syson.sysml.AllocationUsage;
 import org.eclipse.syson.sysml.Annotation;
 import org.eclipse.syson.sysml.AttributeDefinition;
 import org.eclipse.syson.sysml.AttributeUsage;
@@ -1256,6 +1258,38 @@ public void useCaseDefinition() {
 
     }
 
+    @DisplayName("AllocationDefinition")
+    @Test
+    public void allocationDefinition() {
+        AllocationDefinition allocationDefinition = this.builder.createWithName(AllocationDefinition.class, "ad_1");
+
+        this.assertTextualFormEquals("allocation def ad_1;", allocationDefinition);
+    }
+
+    @DisplayName("AllocationDefinition containing a part")
+    @Test
+    public void allocationDefinitionWithContainedEnd() {
+        AllocationDefinition allocationDefinition = this.builder.createWithName(AllocationDefinition.class, "ad_1");
+        this.builder.createInWithName(PartUsage.class, allocationDefinition, "part_1");
+
+        this.assertTextualFormEquals("""
+                allocation def ad_1 {
+                    ref part part_1;
+                }""", allocationDefinition);
+    }
+
+    @DisplayName("AllocationUsage")
+    @Test
+    public void allocationUsage() {
+        AllocationUsage allocationDefinition = this.builder.createWithName(AllocationUsage.class, "au_1");
+        this.builder.createInWithName(PartUsage.class, allocationDefinition, "part_1");
+
+        this.assertTextualFormEquals("""
+                ref allocation au_1 {
+                    ref part part_1;
+                }""", allocationDefinition);
+    }
+
     @DisplayName("ActionUsage with simple succession with owned sub-actions")
     @Test
     public void actionUsageWithSuccessionSimple() {