diff --git a/packer b/packer
index 1a2d841..e81ae6c 100644
--- a/packer
+++ b/packer
@@ -67,7 +67,7 @@ runasroot() {
   else
     echo -n "root "
     # Hack: need to echo to make sure all of the args get in the single set of quotes
-    su root -c "$(echo $@)"
+    su -c "$(printf '%q ' "$@")"
   fi
 }
 
diff --git a/packer.8 b/packer.8
index 95c0560..1cf9857 100644
--- a/packer.8
+++ b/packer.8
@@ -208,6 +208,8 @@ IgnorePkg
 Packer output will be colorized unless the environmental variable COLOR is set to `NO'.
 .sp
 To manually edit files, packer uses the EDITOR variable\&. If EDITOR is not set then the default editor is vi\&.
+.sp
+Packages are built in the TMPDIR path\&. If the TMPDIR variable is not set then the default path is /tmp
 .SH "SEE ALSO"
 .sp
 \fBpacman\fR(8)