diff --git a/misc/scripts/svn/hooks/pre-commit b/misc/scripts/svn/hooks/pre-commit
index 779f046215..73c84dbdb2 100755
--- a/misc/scripts/svn/hooks/pre-commit
+++ b/misc/scripts/svn/hooks/pre-commit
@@ -22,7 +22,7 @@ all_changed_files=`svnl changed | \
                     sed 's/^....//' | \
                     egrep -v "branches/WX_2_" | \
                     egrep -v "wxWidgets/vendor" | \
-                    egrep -v "src/(expat|tiff|regex|jpeg|stc/scintilla)" | \
+                    egrep -v "src/(expat|tiff|regex|jpeg|stc/scintilla|zlib)" | \
                     egrep -v "src/msw/version.rc" | \
                     egrep -v "_wrap.cpp" | \
                     egrep -v "wxPython/.*/docs/.*\.html$"`