diff --git a/systemvm/scripts/_run.sh b/systemvm/scripts/_run.sh
index bd063468cfb..1a37c7d372c 100755
--- a/systemvm/scripts/_run.sh
+++ b/systemvm/scripts/_run.sh
@@ -61,4 +61,11 @@ then
   maxmem=$eightypcnt
 fi
 
+if [ "$(uname -m | grep '64')" == "" ]; then
+  let "maxmem32bit=2600"
+  if [ $maxmem -gt $maxmem32bit ]; then
+    maxmem=$maxmem32bit
+  fi
+fi
+
 java -Djavax.net.ssl.trustStore=./certs/realhostip.keystore -Dlog.home=$LOGHOME -mx${maxmem}m -cp $CP com.cloud.agent.AgentShell $keyvalues $@