diff --git a/generateversionscript.awk b/generateversionscript.awk
index d1c294be5818..226c6a545fb7 100644
--- a/generateversionscript.awk
+++ b/generateversionscript.awk
@@ -8,7 +8,7 @@ BEGIN {
 	gsub(/\r/,"", $0);
 	
 	# Skip empty lines and comment lines starting with semicolon
-	if (NF && !match($0, /^[:space:]*;/))
+	if (NF && !match($0, /^[ \t]*;/))
 	{
 		print "        "  $0 ";";
 	}