diff --git a/build.cmd b/build.cmd
index e5cf84491967bfb6263dbf5e9e73cc3245df0948..83b916bd2d0b1274b7bf51e25331494835cee829 100644
--- a/build.cmd
+++ b/build.cmd
@@ -2,6 +2,8 @@
 
 PUSHD %~dp0
 
+SET JAVA_HOME=C:\program files\java\jdk11.0.1
+
 MKDIR build > NUL
 
 javac -d build/ src/*.java
diff --git a/run.cmd b/run.cmd
index 00509c6520bcab54d6021dd4fc3c5a3ed3956b86..9ff3d84ddca90ac9b0fa1ecbe98f4eadf78cdc80 100644
--- a/run.cmd
+++ b/run.cmd
@@ -3,6 +3,8 @@ SETLOCAL enabledelayedexpansion enableextensions
 
 PUSHD %~dp0
 
+SET JAVA_HOME=C:\program files\java\jdk11.0.1
+
 SET LIBS=
 FOR %%F IN (%CD%\lib\*.jar) DO SET LIBS=!LIBS!;%%F
 SET LIBS=%LIBS:~1%