diff --git a/CMakeLists.txt b/CMakeLists.txt
index 85a1b236..c5baf03f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,7 +9,7 @@ project(minetest)
 
 set(VERSION_MAJOR 0)
 set(VERSION_MINOR 2)
-set(VERSION_PATCH 20110406-0)
+set(VERSION_PATCH 20110406_0)
 set(VERSION_STRING "${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
 
 # Configuration options