diff --git a/_ucoinpy_test/api/bma/test_blockchain.py b/_ucoinpy_test/api/bma/test_blockchain.py
index 72959726106c24e74c8ea1e7931d6323fac10a1b..06ecba8ab76794930c26f368cc5651d596c304cc 100644
--- a/_ucoinpy_test/api/bma/test_blockchain.py
+++ b/_ucoinpy_test/api/bma/test_blockchain.py
@@ -197,14 +197,14 @@ class Test_BMA_Blockchain(WebFunctionalSetupMixin, unittest.TestCase):
             "sigDate": 1421787800,
             "memberships": [
                 {
-                    "version": "1",
+                    "version": 1,
                     "currency": "meta_brouzouf",
                     "membership": "IN",
                     "blockNumber": 0,
                     "blockHash": "DA39A3EE5E6B4B0D3255BFEF95601890AFD80709"
                 },
                 {
-                    "version": "1",
+                    "version": 1,
                     "currency": "meta_brouzouf",
                     "membership": "IN",
                     "blockNumber": 31658,
diff --git a/ucoinpy/api/bma/blockchain/__init__.py b/ucoinpy/api/bma/blockchain/__init__.py
index 2232b04b121d61cecc2b6cf74ca00e00a5adefea..854935d9efd2882af4ceed0db747be00036e83d8 100644
--- a/ucoinpy/api/bma/blockchain/__init__.py
+++ b/ucoinpy/api/bma/blockchain/__init__.py
@@ -81,6 +81,7 @@ class Parameters(Blockchain):
         "required": ["currency", "c", "dt", "ud0","sigDelay","sigValidity","sigQty","sigWoT","msValidity",
                      "stepMax", "medianTimeBlocks", "avgGenTime", "dtDiffEval", "blocksRot", "percentRot"]
     }
+
     def __get__(self, **kwargs):
         r = yield from self.requests_get('/parameters', **kwargs)
         return (yield from self.parse(r))
@@ -107,7 +108,7 @@ class Membership(Blockchain):
                     "type": "object",
                     "properties": {
                         "version": {
-                            "type": "string"
+                            "type": "number"
                         },
                         "currency": {
                             "type": "string"
@@ -116,7 +117,7 @@ class Membership(Blockchain):
                             "type": "string"
                         },
                         "blockNumber": {
-                            "type": "number",
+                            "type": "number"
                         },
                         "blockHash": {
                             "type": "string"