diff --git a/src/universal/bin/sbt b/src/universal/bin/sbt
index 0dab765dc..79d92cc95 100755
--- a/src/universal/bin/sbt
+++ b/src/universal/bin/sbt
@@ -401,7 +401,7 @@ Usage: `basename "$0"` [options]
   --sbt-dir   <path>  path to global settings/plugins directory (default: ~/.sbt)
   --sbt-boot  <path>  path to shared boot directory (default: ~/.sbt/boot in 0.11 series)
   --ivy       <path>  path to local Ivy repository (default: ~/.ivy2)
-  --mem    <integer>  set memory options (default: $sbt_default_mem, which is $(get_mem_opts))
+  --mem    <integer>  set memory options (default: $sbt_default_mem)
   --no-share          use all local caches; no sharing
   --no-global         uses global caches, but does not use global ~/.sbt directory.
   --jvm-debug <port>  Turn on JVM debugging, open at the given port.