diff --git a/plugins/io.sarl.lang/src/io/sarl/lang/jvmmodel/SARLJvmModelInferrer.xtend b/plugins/io.sarl.lang/src/io/sarl/lang/jvmmodel/SARLJvmModelInferrer.xtend
index d30d675edc..3b9951e8fc 100644
--- a/plugins/io.sarl.lang/src/io/sarl/lang/jvmmodel/SARLJvmModelInferrer.xtend
+++ b/plugins/io.sarl.lang/src/io/sarl/lang/jvmmodel/SARLJvmModelInferrer.xtend
@@ -116,9 +116,9 @@ class SARLJvmModelInferrer extends AbstractModelInferrer {
 
 	@Inject	private CommonTypeComputationServices services
 	
-	@Inject private JvmTypeExtensions typeExtensions;
+	@Inject private JvmTypeExtensions typeExtensions
 	
-	@Inject private SARLExtendedEarlyExitComputer earlyExitComputer;
+	@Inject private SARLExtendedEarlyExitComputer earlyExitComputer
 
 	/**
 	 * The dispatch method {@code infer} is called for each instance of the
@@ -912,6 +912,9 @@ class SARLJvmModelInferrer extends AbstractModelInferrer {
 					)
 					if (!isAbstract) {
 						body = [
+							if (returnValueType.identifier != "void") {
+								append("return ")
+							}
 							append(name)
 							append("(")
 							append(args.join(", "))
diff --git a/tests/io.sarl.lang.tests/src/io/sarl/lang/tests/compilation/ArgDefaultValueCompilerTest.xtend b/tests/io.sarl.lang.tests/src/io/sarl/lang/tests/compilation/ArgDefaultValueCompilerTest.xtend
index a9118d3382..8531679fa6 100644
--- a/tests/io.sarl.lang.tests/src/io/sarl/lang/tests/compilation/ArgDefaultValueCompilerTest.xtend
+++ b/tests/io.sarl.lang.tests/src/io/sarl/lang/tests/compilation/ArgDefaultValueCompilerTest.xtend
@@ -428,6 +428,65 @@ class ArgDefaultValueCompilerTest extends AbstractSarlTest {
 		''')
 	}
 
+	@Test
+	def void inAgentAction_1p_returnValue() {
+		'''
+			agent A1 {
+				def myaction(arg : int=4) : boolean {
+					System.out.println(arg)
+					return true
+				}
+			}
+		'''.assertCompilesTo('''
+			import io.sarl.lang.annotation.DefaultValue;
+			import io.sarl.lang.annotation.DefaultValueSource;
+			import io.sarl.lang.annotation.DefaultValueUse;
+			import io.sarl.lang.annotation.Generated;
+			import io.sarl.lang.core.Agent;
+			import java.util.UUID;
+			
+			@SuppressWarnings("all")
+			public class A1 extends Agent {
+			  /**
+			   * Default value for the parameter arg
+			   */
+			  @Generated("4")
+			  private final static int ___FORMAL_PARAMETER_DEFAULT_VALUE_0_0 = 4;
+			  
+			  @DefaultValueSource
+			  public boolean myaction(@DefaultValue("0_0") final int arg) {
+			    System.out.println(arg);
+			    return true;
+			  }
+			  
+			  @DefaultValueUse("int")
+			  @Generated
+			  public final boolean myaction() {
+			    return myaction(___FORMAL_PARAMETER_DEFAULT_VALUE_0_0);
+			  }
+			  
+			  /**
+			   * Construct an agent.
+			   * @param parentID - identifier of the parent. It is the identifier of the parent agent and the enclosing contect, at the same time.
+			   */
+			  @Generated
+			  public A1(final UUID parentID) {
+			    super(parentID, null);
+			  }
+			  
+			  /**
+			   * Construct an agent.
+			   * @param parentID - identifier of the parent. It is the identifier of the parent agent and the enclosing contect, at the same time.
+			   * @param agentID - identifier of the agent. If <code>null</code> the agent identifier will be computed randomly.
+			   */
+			  @Generated
+			  public A1(final UUID parentID, final UUID agentID) {
+			    super(parentID, agentID);
+			  }
+			}
+		''')
+	}
+
 	@Test
 	def void inAgentAction_5p_0() {
 		'''
@@ -780,6 +839,65 @@ class ArgDefaultValueCompilerTest extends AbstractSarlTest {
 		''')
 	}
 
+	@Test
+	def void inAgentAction_5p_returnValue() {
+		'''
+			agent A1 {
+				def myaction(arg0 : int=4, arg1 : String, arg2 : int, arg3 : int, arg4 : String) : boolean {
+					System.out.println(arg0)
+					return true
+				}
+			}
+		'''.assertCompilesTo('''
+			import io.sarl.lang.annotation.DefaultValue;
+			import io.sarl.lang.annotation.DefaultValueSource;
+			import io.sarl.lang.annotation.DefaultValueUse;
+			import io.sarl.lang.annotation.Generated;
+			import io.sarl.lang.core.Agent;
+			import java.util.UUID;
+			
+			@SuppressWarnings("all")
+			public class A1 extends Agent {
+			  /**
+			   * Default value for the parameter arg0
+			   */
+			  @Generated("4")
+			  private final static int ___FORMAL_PARAMETER_DEFAULT_VALUE_0_0 = 4;
+			  
+			  @DefaultValueSource
+			  public boolean myaction(@DefaultValue("0_0") final int arg0, final String arg1, final int arg2, final int arg3, final String arg4) {
+			    System.out.println(arg0);
+			    return true;
+			  }
+			  
+			  @DefaultValueUse("int,java.lang.String,int,int,java.lang.String")
+			  @Generated
+			  public final boolean myaction(final String arg1, final int arg2, final int arg3, final String arg4) {
+			    return myaction(___FORMAL_PARAMETER_DEFAULT_VALUE_0_0, arg1, arg2, arg3, arg4);
+			  }
+			  
+			  /**
+			   * Construct an agent.
+			   * @param parentID - identifier of the parent. It is the identifier of the parent agent and the enclosing contect, at the same time.
+			   */
+			  @Generated
+			  public A1(final UUID parentID) {
+			    super(parentID, null);
+			  }
+			  
+			  /**
+			   * Construct an agent.
+			   * @param parentID - identifier of the parent. It is the identifier of the parent agent and the enclosing contect, at the same time.
+			   * @param agentID - identifier of the agent. If <code>null</code> the agent identifier will be computed randomly.
+			   */
+			  @Generated
+			  public A1(final UUID parentID, final UUID agentID) {
+			    super(parentID, agentID);
+			  }
+			}
+		''')
+	}
+
 	@Test
 	def void inAgentAction_3p_vararg_1() {
 		'''
@@ -959,6 +1077,65 @@ class ArgDefaultValueCompilerTest extends AbstractSarlTest {
 		''')
 	}
 
+	@Test
+	def void inAgentAction_3p_vararg_returnValue() {
+		'''
+			agent A1 {
+				def myaction(arg0 : int, arg1 : int=45, arg2 : int*) : boolean {
+					System.out.println(arg0)
+					return true
+				}
+			}
+		'''.assertCompilesTo('''
+			import io.sarl.lang.annotation.DefaultValue;
+			import io.sarl.lang.annotation.DefaultValueSource;
+			import io.sarl.lang.annotation.DefaultValueUse;
+			import io.sarl.lang.annotation.Generated;
+			import io.sarl.lang.core.Agent;
+			import java.util.UUID;
+			
+			@SuppressWarnings("all")
+			public class A1 extends Agent {
+			  /**
+			   * Default value for the parameter arg1
+			   */
+			  @Generated("45")
+			  private final static int ___FORMAL_PARAMETER_DEFAULT_VALUE_0_1 = 45;
+			  
+			  @DefaultValueSource
+			  public boolean myaction(final int arg0, @DefaultValue("0_1") final int arg1, final int... arg2) {
+			    System.out.println(arg0);
+			    return true;
+			  }
+			  
+			  @DefaultValueUse("int,int,int*")
+			  @Generated
+			  public final boolean myaction(final int arg0, final int... arg2) {
+			    return myaction(arg0, ___FORMAL_PARAMETER_DEFAULT_VALUE_0_1, arg2);
+			  }
+			  
+			  /**
+			   * Construct an agent.
+			   * @param parentID - identifier of the parent. It is the identifier of the parent agent and the enclosing contect, at the same time.
+			   */
+			  @Generated
+			  public A1(final UUID parentID) {
+			    super(parentID, null);
+			  }
+			  
+			  /**
+			   * Construct an agent.
+			   * @param parentID - identifier of the parent. It is the identifier of the parent agent and the enclosing contect, at the same time.
+			   * @param agentID - identifier of the agent. If <code>null</code> the agent identifier will be computed randomly.
+			   */
+			  @Generated
+			  public A1(final UUID parentID, final UUID agentID) {
+			    super(parentID, agentID);
+			  }
+			}
+		''')
+	}
+
 	@Test
 	def void inAgentAction_4p_0_1_2_3() {
 		'''
diff --git a/tests/io.sarl.lang.tests/src/io/sarl/lang/tests/parsing/ArgDefaultValueParsingTest.xtend b/tests/io.sarl.lang.tests/src/io/sarl/lang/tests/parsing/ArgDefaultValueParsingTest.xtend
index f69822d802..15fe064488 100644
--- a/tests/io.sarl.lang.tests/src/io/sarl/lang/tests/parsing/ArgDefaultValueParsingTest.xtend
+++ b/tests/io.sarl.lang.tests/src/io/sarl/lang/tests/parsing/ArgDefaultValueParsingTest.xtend
@@ -87,6 +87,20 @@ class ArgDefaultValueParsingTest extends AbstractSarlTest {
 			"mismatched input '*=' expecting ')'")
 	}
 
+	@Test
+	def void inAgentAction_1p_returnValue() {
+		val mas = '''
+			agent A1 {
+				def myaction(arg : int=4) : boolean {
+					System.out.println(arg)
+					return true
+				}
+			}
+		'''.parse
+		mas.assertNoErrors
+		assertEquals(1, mas.elements.size)
+	}
+
 	@Test
 	def void inAgentAction_5p_0() {
 		val mas = '''