diff --git a/win32/build/confutils.js b/win32/build/confutils.js
index 3724878758c..d93cfe4a681 100644
--- a/win32/build/confutils.js
+++ b/win32/build/confutils.js
@@ -2890,6 +2890,10 @@ function toolset_setup_project_tools()
 		RE2CVERS = probe_binary(RE2C, "version");
 		STDOUT.WriteLine('  Detected re2c version ' + RE2CVERS);
 
+		if (RE2CVERS.match(/^\d+.\d+$/)) {
+			RE2CVERS += ".0";
+		}
+
 		intvers = RE2CVERS.replace(pattern, '') - 0;
 		intmin = MINRE2C.replace(pattern, '') - 0;