diff --git a/cloud/docker/_docker.py b/cloud/docker/_docker.py
index e5d80f74811..4d39898e1b3 100644
--- a/cloud/docker/_docker.py
+++ b/cloud/docker/_docker.py
@@ -562,6 +562,8 @@ def _human_to_bytes(number):
 
     if isinstance(number, int):
         return number
+    if number.isdigit():
+        return int(number)
     if number[-1] == suffixes[0] and number[-2].isdigit():
         return number[:-1]
 
@@ -1853,7 +1855,7 @@ def main():
             volumes_from    = dict(default=None, type='list'),
             links           = dict(default=None, type='list'),
             devices         = dict(default=None, type='list'),
-            memory_limit    = dict(default=0, type='int'),
+            memory_limit    = dict(default=0),
             memory_swap     = dict(default=0, type='int'),
             cpu_shares      = dict(default=0, type='int'),
             docker_url      = dict(),