diff --git a/common.gradle b/common.gradle
index f0c716d70..80b22904d 100644
--- a/common.gradle
+++ b/common.gradle
@@ -43,6 +43,8 @@ javadoc {
     options.header = "<b>jMonkeyEngine ${jmeMainVersion} ${project.name}</b>"
     options.author = "true"
     options.use = "true"
+    options.charSet = "UTF-8"
+    options.encoding = "UTF-8"
     //disable doclint for JDK8, more quiet output
     if (JavaVersion.current().isJava8Compatible()){
         options.addStringOption('Xdoclint:none', '-quiet')
diff --git a/jme3-bullet/build.gradle b/jme3-bullet/build.gradle
index daa82d8dc..404e6cb00 100644
--- a/jme3-bullet/build.gradle
+++ b/jme3-bullet/build.gradle
@@ -33,6 +33,7 @@ task generateNativeHeaders(type: Exec, dependsOn: classes) {
     args "-h", nativeIncludes
     args "@$projectDir/java_classes.jtxt"
     args '-d', classBuildDir
+    args "-encoding", "UTF-8"
 }
 
 assemble.dependsOn(generateNativeHeaders)
\ No newline at end of file
diff --git a/jme3-desktop/build.gradle b/jme3-desktop/build.gradle
index 0a77d7d72..60d0a831d 100644
--- a/jme3-desktop/build.gradle
+++ b/jme3-desktop/build.gradle
@@ -4,4 +4,4 @@ if (!hasProperty('mainClass')) {
 
 dependencies {
     compile project(':jme3-core')
-}
+}
\ No newline at end of file
diff --git a/jme3-examples/build.gradle b/jme3-examples/build.gradle
index cd98abaa9..08e2a8dad 100644
--- a/jme3-examples/build.gradle
+++ b/jme3-examples/build.gradle
@@ -126,4 +126,4 @@ task dist (dependsOn: ['build', ':jme3-jogl:jar', ':jme3-bullet:jar', ':jme3-and
             rename {project(':jme3-bullet-native-android').name+".jar"}
         }
     }
-}
+}
\ No newline at end of file