diff --git a/appveyor.yml b/appveyor.yml
index dd3f1abbd0539..7be438bd0304e 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,6 @@
 environment:
 #  USEMSVC: "1"
-  JULIA_TEST_MAXRSS_MB: 600
+  JULIA_TEST_MAXRSS_MB: 500
   matrix:
   - ARCH: "i686"
   - ARCH: "x86_64"