diff --git a/src/core/org/luaj/vm/LuaState.java b/src/core/org/luaj/vm/LuaState.java
index b3b5fad0..b6d08e7c 100644
--- a/src/core/org/luaj/vm/LuaState.java
+++ b/src/core/org/luaj/vm/LuaState.java
@@ -836,7 +836,7 @@ public class LuaState extends Lua {
                 continue;
             }
             case LuaState.OP_CLOSE: {
-                closeUpVals( a ); // close upvals higher in the stack than position a
+                closeUpVals( base + a ); // close upvals higher in the stack than position a
                 continue;
             }
             case LuaState.OP_CLOSURE: {
diff --git a/version.properties b/version.properties
index 692c9c06..5cb2ca00 100644
--- a/version.properties
+++ b/version.properties
@@ -1 +1 @@
-version: 0.18
\ No newline at end of file
+version: 0.19