diff --git a/src/another-xlsx-export/index.js b/src/another-xlsx-export/index.js
index 28c2b79a..df6bd9ec 100644
--- a/src/another-xlsx-export/index.js
+++ b/src/another-xlsx-export/index.js
@@ -12,6 +12,9 @@ class AnotherXLSXExport extends XLSXExport {
   get format(){
     return 'Another';
   }
+  get defaultFilepath() {
+    return 'another-xlsx';
+  }
   makeSheet(){
     // filtered namespaces
     let nsOutput = [...this._container.namespaceStorage]
diff --git a/src/core/abstract-export.js b/src/core/abstract-export.js
index 464eda23..a92df6b8 100644
--- a/src/core/abstract-export.js
+++ b/src/core/abstract-export.js
@@ -3,7 +3,6 @@ const { ajv } = require('../utils');
 
 const schema = {
   type: 'object',
-  required: ['filepath'],
   properties: {
     filepath: {type: 'string', pattern: '^[\\w\\d\\\\/._!-]+$'},
     spaceFilter: { type: 'string' }
@@ -36,7 +35,7 @@ class AbstractExport extends Top {
     let valid = AbstractExport.isValid(q, logger);
     if (!valid) { this.errored = true; return; }
 
-    if (q.filepath) this.filepath = q.filepath;
+    this.filepath = q.filepath || this.defaultFilepath;
     
     this.spaceFilter = q.spaceFilter || '.+';
   }
diff --git a/src/dbsolve-export/index.js b/src/dbsolve-export/index.js
index 6bdb34b6..182b5c3f 100644
--- a/src/dbsolve-export/index.js
+++ b/src/dbsolve-export/index.js
@@ -36,6 +36,9 @@ class DBSolveExport extends AbstractExport{
   get requireConcrete() {
     return true;
   }
+  get defaultFilepath() {
+    return 'dbsolve';
+  }
   /**
    * The method creates text code to save as SLV file.
    *
diff --git a/src/dot-export/index.js b/src/dot-export/index.js
index 54c70168..de7485e5 100644
--- a/src/dot-export/index.js
+++ b/src/dot-export/index.js
@@ -23,6 +23,9 @@ class DotExport extends AbstractExport{
   get format(){
     return 'Dot';
   }
+  get defaultFilepath() {
+    return 'dot';
+  }
   makeText(){
     let logger = this._container.logger;
 
diff --git a/src/heta-code-export/index.js b/src/heta-code-export/index.js
index 2c209c0a..c0c65ee5 100644
--- a/src/heta-code-export/index.js
+++ b/src/heta-code-export/index.js
@@ -23,6 +23,9 @@ class HetaCodeExport extends AbstractExport{
   get format(){
     return 'heta';
   }
+  get defaultFilepath() {
+    return 'heta-code';
+  }
   /**
    * The method creates text code to save as Heta code file.
    *
diff --git a/src/json-export/index.js b/src/json-export/index.js
index 65fd524d..89234f49 100644
--- a/src/json-export/index.js
+++ b/src/json-export/index.js
@@ -25,6 +25,9 @@ class JSONExport extends AbstractExport {
   get className(){
     return 'JSONExport';
   }
+  get defaultFilepath() {
+    return 'json';
+  }
   get format(){
     return 'JSON';
   }
diff --git a/src/julia-export/index.js b/src/julia-export/index.js
index 95a45f49..5f98d0fa 100644
--- a/src/julia-export/index.js
+++ b/src/julia-export/index.js
@@ -31,6 +31,9 @@ class JuliaExport extends AbstractExport {
   get requireConcrete() {
     return true;
   }
+  get defaultFilepath() {
+    return 'julia';
+  }
   // skipVersionCode means that the version will not be printed in output
   // this is required for autotests
   makeText(skipVersionCode = false){
diff --git a/src/matlab-export/index.js b/src/matlab-export/index.js
index 8ce0162e..228a718a 100644
--- a/src/matlab-export/index.js
+++ b/src/matlab-export/index.js
@@ -22,6 +22,9 @@ class MatlabExport extends AbstractExport {
   get className(){
     return 'MatlabExport';
   }
+  get defaultFilepath() {
+    return 'matlab';
+  }
   get format(){
     return 'Matlab';
   }
diff --git a/src/mrgsolve-export/index.js b/src/mrgsolve-export/index.js
index 70896f29..7766b1b2 100644
--- a/src/mrgsolve-export/index.js
+++ b/src/mrgsolve-export/index.js
@@ -21,6 +21,9 @@ class MrgsolveExport extends AbstractExport {
   get className(){
     return 'MrgsolveExport';
   }
+  get defaultFilepath() {
+    return 'mrgsolve';
+  }
   get format(){
     return 'Mrgsolve';
   }
diff --git a/src/sbml-export/index.js b/src/sbml-export/index.js
index d539b582..d14ad64a 100644
--- a/src/sbml-export/index.js
+++ b/src/sbml-export/index.js
@@ -29,6 +29,9 @@ class SBMLExport extends AbstractExport {
   get className(){
     return 'SBMLExport';
   }
+  get defaultFilepath() {
+    return 'sbml';
+  }
   get format(){
     return 'SBML';
   }
diff --git a/src/simbio-export/index.js b/src/simbio-export/index.js
index 7fd62873..fad58a29 100644
--- a/src/simbio-export/index.js
+++ b/src/simbio-export/index.js
@@ -21,6 +21,9 @@ class SimbioExport extends AbstractExport{
   get className(){
     return 'SimbioExport';
   }
+  get defaultFilepath() {
+    return 'simbio';
+  }
   get format(){
     return 'Simbio';
   }
diff --git a/src/slv-export/index.js b/src/slv-export/index.js
index 7d66182c..e04ddb5a 100644
--- a/src/slv-export/index.js
+++ b/src/slv-export/index.js
@@ -35,6 +35,9 @@ class SLVExport extends AbstractExport{
   get className(){
     return 'SLVExport';
   }
+  get defaultFilepath() {
+    return 'slv';
+  }
   get format(){
     return 'SLV';
   }
diff --git a/src/table-export/index.js b/src/table-export/index.js
index 31850b09..946d4159 100644
--- a/src/table-export/index.js
+++ b/src/table-export/index.js
@@ -75,6 +75,9 @@ class TableExport extends AbstractExport {
   get className(){
     return 'TableExport';
   }
+  get defaultFilepath() {
+    return 'table';
+  }
   get format(){
     return 'Table';
   }
diff --git a/src/xlsx-export/index.js b/src/xlsx-export/index.js
index 82f0e9cf..2994d226 100644
--- a/src/xlsx-export/index.js
+++ b/src/xlsx-export/index.js
@@ -23,6 +23,9 @@ class XLSXExport extends TableExport {
   get className(){
     return 'XLSXExport';
   }
+  get defaultFilepath() {
+    return 'xlsx';
+  }
   get format(){
     return 'XLSX';
   }
diff --git a/src/yaml-export/index.js b/src/yaml-export/index.js
index aafc11c2..7b4e65ba 100644
--- a/src/yaml-export/index.js
+++ b/src/yaml-export/index.js
@@ -26,6 +26,9 @@ class YAMLExport extends AbstractExport {
   get className(){
     return 'YAMLExport';
   }
+  get defaultFilepath() {
+    return 'yaml';
+  }
   get format(){
     return 'YAML';
   }
diff --git a/test/export/export-check.js b/test/export/export-check.js
index 716ffefb..7e0c2b86 100644
--- a/test/export/export-check.js
+++ b/test/export/export-check.js
@@ -59,7 +59,8 @@ describe('General argument checking', () => {
     let json_export = p.export({
       format: 'JSON'
     });
-    expect(p.logger).to.have.property('hasErrors').true;
+    expect(p.logger).to.have.property('hasErrors').false;
+    expect(json_export).to.have.property('filepath', 'json');
     expect(json_export).to.be.instanceOf(p.classes.JSON);
     p.logger.resetErrors();
   });