diff --git a/osmapi/OsmApi.py b/osmapi/OsmApi.py
index fe47749..dda7e79 100644
--- a/osmapi/OsmApi.py
+++ b/osmapi/OsmApi.py
@@ -313,9 +313,9 @@ def NodeGet(self, NodeId, NodeVersion=-1):
         If `NodeVersion` is supplied, this specific version is returned,
         otherwise the latest version is returned.
         """
-        uri = "/api/0.6/node/" + str(NodeId)
+        uri = "/api/0.6/node/%s" % (NodeId)
         if NodeVersion != -1:
-            uri += "/" + str(NodeVersion)
+            uri += "/%s" % (NodeVersion)
         data = self._get(uri)
         if not data:
             return data
@@ -452,7 +452,7 @@ def NodeHistory(self, NodeId):
 
         `NodeId` is the unique identifier of a node.
         """
-        uri = "/api/0.6/node/" + str(NodeId) + "/history"
+        uri = "/api/0.6/node/%s/history" % NodeId
         data = self._get(uri)
         data = xml.dom.minidom.parseString(data)
         result = {}
@@ -586,9 +586,9 @@ def WayGet(self, WayId, WayVersion=-1):
         If `WayVersion` is supplied, this specific version is returned,
         otherwise the latest version is returned.
         """
-        uri = "/api/0.6/way/" + str(WayId)
+        uri = "/api/0.6/way/%s" % (WayId)
         if WayVersion != -1:
-            uri += "/" + str(WayVersion)
+            uri += "/%s" % (WayVersion)
         data = self._get(uri)
         if not data:
             return data
@@ -722,7 +722,7 @@ def WayHistory(self, WayId):
 
         `WayId` is the unique identifier of a way.
         """
-        uri = "/api/0.6/way/" + str(WayId) + "/history"
+        uri = "/api/0.6/way/%s/history" % (WayId)
         data = self._get(uri)
         data = xml.dom.minidom.parseString(data)
         result = {}
@@ -789,7 +789,7 @@ def WayFull(self, WayId):
 
         The `WayId` is a unique identifier for a way.
         """
-        uri = "/api/0.6/way/" + str(WayId) + "/full"
+        uri = "/api/0.6/way/%s/full" % (WayId)
         data = self._get(uri)
         return self.ParseOsm(data)
 
@@ -850,9 +850,9 @@ def RelationGet(self, RelationId, RelationVersion=-1):
         If `RelationVersion` is supplied, this specific version is returned,
         otherwise the latest version is returned.
         """
-        uri = "/api/0.6/relation/" + str(RelationId)
+        uri = "/api/0.6/relation/%s" % (RelationId)
         if RelationVersion != -1:
-            uri += "/" + str(RelationVersion)
+            uri += "/%s" % (RelationVersion)
         data = self._get(uri)
         if not data:
             return data
@@ -1013,7 +1013,7 @@ def RelationHistory(self, RelationId):
 
         `RelationId` is the unique identifier of a relation.
         """
-        uri = "/api/0.6/relation/" + str(RelationId) + "/history"
+        uri = "/api/0.6/relation/%s/history" % (RelationId)
         data = self._get(uri)
         data = xml.dom.minidom.parseString(data)
         result = {}
@@ -1121,7 +1121,7 @@ def RelationFull(self, RelationId):
 
         If you need all levels, use `OsmApi.RelationFullRecur`.
         """
-        uri = "/api/0.6/relation/" + str(RelationId) + "/full"
+        uri = "/api/0.6/relation/%s/full" % (RelationId)
         data = self._get(uri)
         return self.ParseOsm(data)
 
@@ -1181,7 +1181,7 @@ def ChangesetGet(self, ChangesetId, include_discussion=False):
         If `include_discussion` is set to `True` the changeset discussion
         will be available in the result.
         """
-        path = "/api/0.6/changeset/" + str(ChangesetId)
+        path = "/api/0.6/changeset/%s" % (ChangesetId)
         if (include_discussion):
             path = path + "?include_discussion=true"
         data = self._get(path)
@@ -1205,7 +1205,7 @@ def ChangesetUpdate(self, ChangesetTags={}):
         if "created_by" not in ChangesetTags:
             ChangesetTags["created_by"] = self._created_by
         self._put(
-            "/api/0.6/changeset/" + str(self._CurrentChangesetId),
+            "/api/0.6/changeset/%s" % (self._CurrentChangesetId),
             self._XmlBuild("changeset", {"tag": ChangesetTags})
         )
         return self._CurrentChangesetId
@@ -1250,7 +1250,7 @@ def ChangesetClose(self):
         if not self._CurrentChangesetId:
             raise NoChangesetOpenError("No changeset currently opened")
         self._put(
-            "/api/0.6/changeset/" + str(self._CurrentChangesetId) + "/close",
+            "/api/0.6/changeset/%s/close" % (self._CurrentChangesetId),
             ""
         )
         CurrentChangesetId = self._CurrentChangesetId
@@ -1288,7 +1288,7 @@ def ChangesetUpload(self, ChangesData):
             data += "</" + change["action"] + ">\n"
         data += "</osmChange>"
         data = self._post(
-            "/api/0.6/changeset/" + str(self._CurrentChangesetId) + "/upload",
+            "/api/0.6/changeset/%s/upload" % (self._CurrentChangesetId),
             data.encode("utf-8")
         )
         data = xml.dom.minidom.parseString(data)
@@ -1317,7 +1317,7 @@ def ChangesetDownload(self, ChangesetId):
                 'data': {}
             }
         """
-        uri = "/api/0.6/changeset/" + str(ChangesetId) + "/download"
+        uri = "/api/0.6/changeset/%s/download" % (ChangesetId)
         data = self._get(uri)
         return self.ParseOsc(data)
 
@@ -1416,7 +1416,7 @@ def ChangesetComment(self, ChangesetId, comment):
         """
         params = urllib.urlencode({'text': comment})
         data = self._post(
-            "/api/0.6/changeset/" + str(ChangesetId) + "/comment",
+            "/api/0.6/changeset/%s/comment" % (ChangesetId),
             params
         )
         data = xml.dom.minidom.parseString(data)
@@ -1453,7 +1453,7 @@ def ChangesetSubscribe(self, ChangesetId):
         """
         try:
             data = self._post(
-                "/api/0.6/changeset/" + str(ChangesetId) + "/subscribe",
+                "/api/0.6/changeset/%s/subscribe" % (ChangesetId),
                 None
             )
         except ApiError as e:
@@ -1495,7 +1495,7 @@ def ChangesetUnsubscribe(self, ChangesetId):
         """
         try:
             data = self._post(
-                "/api/0.6/changeset/" + str(ChangesetId) + "/unsubscribe",
+                "/api/0.6/changeset/%s/unsubscribe" % (ChangesetId),
                 None
             )
         except ApiError as e:
@@ -1835,14 +1835,14 @@ def _do_manu(self, action, OsmType, OsmData):
             return OsmData
         elif action == "modify":
             result = self._put(
-                "/api/0.6/" + OsmType + "/" + str(OsmData["id"]),
+                "/api/0.6/%s/%s" % (OsmType, OsmData["id"]),
                 self._XmlBuild(OsmType, OsmData)
             )
             OsmData["version"] = int(result.strip())
             return OsmData
         elif action == "delete":
             result = self._delete(
-                "/api/0.6/" + OsmType + "/" + str(OsmData["id"]),
+                "/api/0.6/%s/%s" % (OsmType, OsmData["id"]),
                 self._XmlBuild(OsmType, OsmData)
             )
             OsmData["version"] = int(result.strip())