diff --git a/src/org/kar/archidata/externalRestApi/TsApiGeneration.java b/src/org/kar/archidata/externalRestApi/TsApiGeneration.java
index 549ada1..6d1f7c8 100644
--- a/src/org/kar/archidata/externalRestApi/TsApiGeneration.java
+++ b/src/org/kar/archidata/externalRestApi/TsApiGeneration.java
@@ -319,11 +319,15 @@ public class TsApiGeneration {
 				if (produces.size() > 1) {
 					data.append("\n\t\t\t\taccept: produce,");
 				} else {
-					for (final String elem : produces) {
-						if (MediaType.APPLICATION_JSON.equals(elem)) {
-							data.append("\n\t\t\t\taccept: HTTPMimeType.JSON,");
-							toolImports.add("HTTPMimeType");
-							break;
+					final String returnType = generateClassModelsTypescript(interfaceElement.returnTypes, tsGroup,
+							imports, false);
+					if (!"void".equals(returnType)) {
+						for (final String elem : produces) {
+							if (MediaType.APPLICATION_JSON.equals(elem)) {
+								data.append("\n\t\t\t\taccept: HTTPMimeType.JSON,");
+								toolImports.add("HTTPMimeType");
+								break;
+							}
 						}
 					}
 				}
diff --git a/src/org/kar/archidata/externalRestApi/model/ApiModel.java b/src/org/kar/archidata/externalRestApi/model/ApiModel.java
index ab72bdf..c95e2a4 100644
--- a/src/org/kar/archidata/externalRestApi/model/ApiModel.java
+++ b/src/org/kar/archidata/externalRestApi/model/ApiModel.java
@@ -64,6 +64,9 @@ public class ApiModel {
 					this.returnTypes.add(previousModel.add(clazz));
 				}
 			}
+			if (this.returnTypes.size() == 0) {
+				this.produces.clear();
+			}
 			return;
 		}
 
@@ -91,6 +94,9 @@ public class ApiModel {
 		for (final ClassModel elem : this.returnTypes) {
 			LOGGER.warn("    - {}", elem);
 		}
+		if (this.returnTypes.size() == 0) {
+			this.produces.clear();
+		}
 	}
 
 	public ApiModel(final Class<?> clazz, final Method method, final String baseRestEndPoint,
@@ -166,6 +172,5 @@ public class ApiModel {
 		if (this.unnamedElement.size() > 1) {
 			throw new IOException("Can not parse the API, enmpty element is more than 1 in " + this.name);
 		}
-
 	}
 }