diff --git a/App/tools/getVersion.tcl b/App/tools/getVersion.tcl
index 7678483..e5ab1fb 100755
--- a/App/tools/getVersion.tcl
+++ b/App/tools/getVersion.tcl
@@ -177,7 +177,7 @@ scanmatch $git_context {^([0-9]+)\.([0-9]+)(\.([0-9]+))?$} {
     puts stderr "checking tag $matchInfo(line) => version $version"
 }
 
-scanmatch $git_context {^[a-zA-Z0-9]+_([0-9]+)_([0-9]+)(_([0-9]+))?$} {
+scanmatch $git_context {_([0-9]+)_([0-9]+)(_([0-9]+))?$} {
     set major $matchInfo(submatch0)
     set minor $matchInfo(submatch1)
     set patch [expr $matchInfo(submatch3) + 0]