diff --git a/ptbposter/ptbposter.cls b/ptbposter/ptbposter.cls
index a2503f6b0742789228ba893711c3ebb67e085900..1c32af5d7752bb7ba8684851fdda0ff4b8eb3f4f 100644
--- a/ptbposter/ptbposter.cls
+++ b/ptbposter/ptbposter.cls
@@ -536,7 +536,7 @@
   style=section,%
   level=1,%
   indent=\z@,%
-  beforeskip=-3ex \@plus -1ex \@minus -.2ex,%
+  beforeskip=-2ex \@plus -1ex \@minus -.2ex,%
   afterskip=0.4ex \@plus.2ex,%
   tocindent=0pt,%
   tocnumwidth=1.5em%