diff --git a/lesscpy/lessc/parser.py b/lesscpy/lessc/parser.py
index d45c15f..6805357 100644
--- a/lesscpy/lessc/parser.py
+++ b/lesscpy/lessc/parser.py
@@ -305,6 +305,7 @@ class LessParser(object):
 
     def p_mixin_args_list_aux(self, p):
         """ mixin_args_list          : mixin_args_list ',' mixin_args
+                                     | mixin_args_list ';' mixin_args
         """
         p[1].extend([p[3]])
         p[0] = p[1]
diff --git a/lesscpy/test/css/mixin-args-semicolon.css b/lesscpy/test/css/mixin-args-semicolon.css
new file mode 100644
index 0000000..d691dca
--- /dev/null
+++ b/lesscpy/test/css/mixin-args-semicolon.css
@@ -0,0 +1,3 @@
+.arguments {
+	border: 1px solid black;
+}
diff --git a/lesscpy/test/css/mixin-args-semicolon.min.css b/lesscpy/test/css/mixin-args-semicolon.min.css
new file mode 100644
index 0000000..ee2c891
--- /dev/null
+++ b/lesscpy/test/css/mixin-args-semicolon.min.css
@@ -0,0 +1 @@
+.arguments{border:1px solid black;}
diff --git a/lesscpy/test/less/mixin-args-semicolon.less b/lesscpy/test/less/mixin-args-semicolon.less
new file mode 100644
index 0000000..ab13a5e
--- /dev/null
+++ b/lesscpy/test/less/mixin-args-semicolon.less
@@ -0,0 +1,6 @@
+.mixin-arguments (@width: 0px) {
+    border: @arguments;
+}
+.arguments {
+    .mixin-arguments(1px; solid; black);
+}