diff --git a/debian/maven.properties b/debian/maven.properties
index 3d7d449e3f0613365632adcb6eae2b97aa1d6a2b..24b7ad2be9d8c83dd12ad93244b816ac2cbc8e38 100644
--- a/debian/maven.properties
+++ b/debian/maven.properties
@@ -1,2 +1,4 @@
 
 project.build.sourceEncoding=UTF-8
+maven.compiler.source=1.7
+maven.compiler.target=1.7