diff --git a/openjdk-6-jdk/Dockerfile b/openjdk-6-jdk/Dockerfile
index 66e8b8de..280c6596 100644
--- a/openjdk-6-jdk/Dockerfile
+++ b/openjdk-6-jdk/Dockerfile
@@ -7,6 +7,9 @@ FROM buildpack-deps:wheezy-scm
 
 RUN apt-get update && apt-get install -y unzip && rm -rf /var/lib/apt/lists/*
 
+# Default to UTF-8 file.encoding
+ENV LANG C.UTF-8
+
 ENV JAVA_VERSION 6b34
 ENV JAVA_DEBIAN_VERSION 6b34-1.13.6-1~deb7u1
 
diff --git a/openjdk-6-jre/Dockerfile b/openjdk-6-jre/Dockerfile
index 152a3fe5..d64b4258 100644
--- a/openjdk-6-jre/Dockerfile
+++ b/openjdk-6-jre/Dockerfile
@@ -7,6 +7,9 @@ FROM buildpack-deps:wheezy-curl
 
 RUN apt-get update && apt-get install -y unzip && rm -rf /var/lib/apt/lists/*
 
+# Default to UTF-8 file.encoding
+ENV LANG C.UTF-8
+
 ENV JAVA_VERSION 6b34
 ENV JAVA_DEBIAN_VERSION 6b34-1.13.6-1~deb7u1
 
diff --git a/openjdk-7-jdk/Dockerfile b/openjdk-7-jdk/Dockerfile
index f8595448..2e27c76a 100644
--- a/openjdk-7-jdk/Dockerfile
+++ b/openjdk-7-jdk/Dockerfile
@@ -7,6 +7,9 @@ FROM buildpack-deps:jessie-scm
 
 RUN apt-get update && apt-get install -y unzip && rm -rf /var/lib/apt/lists/*
 
+# Default to UTF-8 file.encoding
+ENV LANG C.UTF-8
+
 ENV JAVA_VERSION 7u75
 ENV JAVA_DEBIAN_VERSION 7u75-2.5.4-2
 
diff --git a/openjdk-7-jre/Dockerfile b/openjdk-7-jre/Dockerfile
index d1b53c8e..7410a6fa 100644
--- a/openjdk-7-jre/Dockerfile
+++ b/openjdk-7-jre/Dockerfile
@@ -7,6 +7,9 @@ FROM buildpack-deps:jessie-curl
 
 RUN apt-get update && apt-get install -y unzip && rm -rf /var/lib/apt/lists/*
 
+# Default to UTF-8 file.encoding
+ENV LANG C.UTF-8
+
 ENV JAVA_VERSION 7u75
 ENV JAVA_DEBIAN_VERSION 7u75-2.5.4-2
 
diff --git a/openjdk-8-jdk/Dockerfile b/openjdk-8-jdk/Dockerfile
index d8a6f82e..b91f3401 100644
--- a/openjdk-8-jdk/Dockerfile
+++ b/openjdk-8-jdk/Dockerfile
@@ -7,6 +7,9 @@ FROM buildpack-deps:sid-scm
 
 RUN apt-get update && apt-get install -y unzip && rm -rf /var/lib/apt/lists/*
 
+# Default to UTF-8 file.encoding
+ENV LANG C.UTF-8
+
 ENV JAVA_VERSION 8u40
 ENV JAVA_DEBIAN_VERSION 8u40-b27-1
 
diff --git a/openjdk-8-jre/Dockerfile b/openjdk-8-jre/Dockerfile
index 0d741eae..f01a83f3 100644
--- a/openjdk-8-jre/Dockerfile
+++ b/openjdk-8-jre/Dockerfile
@@ -7,6 +7,9 @@ FROM buildpack-deps:sid-curl
 
 RUN apt-get update && apt-get install -y unzip && rm -rf /var/lib/apt/lists/*
 
+# Default to UTF-8 file.encoding
+ENV LANG C.UTF-8
+
 ENV JAVA_VERSION 8u40
 ENV JAVA_DEBIAN_VERSION 8u40-b27-1