Be more careful.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@23545 a592a061-630c-0410-9148-cb99ea01b6c8

diff --git a/lib/layouts/theorems-ams.inc b/lib/layouts/theorems-ams.inc
index 4ecb20ada175a340637f35f69999aef2e301fc7e..80789ce6f0582369fe4e8a759b3aa6f94b8305c8 100644 (file)
--- a/lib/layouts/theorems-ams.inc
+++ b/lib/layouts/theorems-ams.inc
@@ -49,6 +49,7 @@ Style Theorem
          Series              Bold
        EndFont
        Preamble
+               \usepackage{amsthm}
                \theoremstyle{plain}
                \newtheorem{thm}{Theorem}
        EndPreamble