diff --git a/git-gui.sh b/git-gui.sh
index 5d65272e26d..238a2393ff7 100755
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -663,7 +663,7 @@ if {![regsub {^git version } $_git_version {} _git_version]} {
 }
 
 set _real_git_version $_git_version
-regsub -- {-dirty$} $_git_version {} _git_version
+regsub -- {[\-\.]dirty$} $_git_version {} _git_version
 regsub {\.[0-9]+\.g[0-9a-f]+$} $_git_version {} _git_version
 regsub {\.rc[0-9]+$} $_git_version {} _git_version
 regsub {\.GIT$} $_git_version {} _git_version