diff --git a/preamble.tex b/preamble.tex
index 2af82fde5..68dd1abf8 100644
--- a/preamble.tex
+++ b/preamble.tex
@@ -250,7 +250,7 @@
 
 \newenvironment{synopsis}[1][modelica]{%
 \lstset{language=[synopsis]#1}%
-~\vspace*{-\parskip}\par
+~\vspace{-\parskip}\par
 }{%
 }
 \newenvironment{semantics}{%