diff --git a/.gitignore b/.gitignore
index 9e66041ea01e6..6ec38e2a7bd44 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,3 +23,5 @@ ccxt.wiki/
 package-lock.json
 exchanges.json
 ccxt.sublime-workspace
+.idea
+yarn.lock
\ No newline at end of file
diff --git a/ccxt.js b/ccxt.js
index 2704ef14ad630..bf47cb2b7f7a6 100644
--- a/ccxt.js
+++ b/ccxt.js
@@ -11827,12 +11827,18 @@ var okcoin = {
         let order = {
             'symbol': this.marketId (market),
             'type': side,
-            'amount': amount,
         };
-        if (type == 'limit')
+        if (type == 'limit') {
             order['price'] = price;
-        else
+            order['amount'] = amount;
+        } else {
+            if (order.type == 'buy') {
+                order['price'] = params;
+            } else {
+                order['amount'] = amount;
+            }
             order['type'] += '_market';
+        }
         let response = await this.privatePostTrade (this.extend (order, params));
         return {
             'info': response,