diff --git a/buildlib/rapt/install_sdk.py b/buildlib/rapt/install_sdk.py
index fba334f..f033f5b 100644
--- a/buildlib/rapt/install_sdk.py
+++ b/buildlib/rapt/install_sdk.py
@@ -48,10 +48,10 @@ def check_java(interface):
     interface.info(__("I'm compiling a short test program, to see if you have a working JDK on your system."))
 
     if not run_slow(interface, plat.javac, plat.path("buildlib/CheckJDK8.java"), use_path=True):
-        interface.fail(__("I was unable to use javac to compile a test file. If you haven't installed the Java Development Kit yet, please download it from:\n\nhttp://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html\n\nThe JDK is different from the JRE, so it's possible you have Java without having the JDK. Without a working JDK, I can't continue."))
+        interface.fail(__("I was unable to use javac (%s) to compile a test file. If you haven't installed the Java Development Kit yet, please download it from:\n\nhttp://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html\n\nThe JDK is different from the JRE, so it's possible you have Java without having the JDK. Without a working JDK, I can't continue." % plat.javac))
 
     if not run_slow(interface, plat.java, "-classpath", plat.path("buildlib"), "CheckJDK8", use_path=True):
-        interface.fail(__("The version of Java on your computer does not appear to be JDK 8, which is the only version supported by the Android SDK. If you need to install JDK 8, you can download it from:\n\nhttp://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html\n\nYou can also set the JAVA_HOME environment variable to use a different version of Java."))
+        interface.fail(__("The version of Java (%s) on your computer does not appear to be JDK 8, which is the only version supported by the Android SDK. If you need to install JDK 8, you can download it from:\n\nhttp://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html\n\nYou can also set the JAVA_HOME environment variable to use a different version of Java." % plat.java))
 
     interface.success(__("The JDK is present and working. Good!"))