diff --git a/examples/gradle/applications.gradle b/examples/gradle/applications.gradle
index ce836f37..1a0f73ba 100644
--- a/examples/gradle/applications.gradle
+++ b/examples/gradle/applications.gradle
@@ -73,7 +73,7 @@ task ('proguard', type: proguard.gradle.ProGuardTask) {
 
     // Preserve all native method names and the names of their classes.
 
-    keepclasseswithmembernames,includedescriptorclasses 'class * { \
+    keepclasseswithmembernames includedescriptorclasses: true, 'class * { \
         native <methods>; \
     }'
 
diff --git a/examples/gradle/midlets.gradle b/examples/gradle/midlets.gradle
index 88f112b6..6523ff47 100644
--- a/examples/gradle/midlets.gradle
+++ b/examples/gradle/midlets.gradle
@@ -79,7 +79,7 @@ task ('proguard', type: proguard.gradle.ProGuardTask) {
 
     // Preserve all native method names and the names of their classes.
 
-    keepclasseswithmembernames,includedescriptorclasses 'class * { \
+    keepclasseswithmembernames includedescriptorclasses: true, 'class * { \
         native <methods>; \
     }'
 
diff --git a/examples/gradle/scala.gradle b/examples/gradle/scala.gradle
index cbde6b2d..2c5a8354 100644
--- a/examples/gradle/scala.gradle
+++ b/examples/gradle/scala.gradle
@@ -129,7 +129,7 @@ task ('proguard', type: proguard.gradle.ProGuardTask) {
 
     // Preserve all native method names and the names of their classes.
 
-    keepclasseswithmembernames,includedescriptorclasses 'class * { \
+    keepclasseswithmembernames includedescriptorclasses: true, 'class * { \
         native <methods>; \
     }'
 
diff --git a/examples/gradle/servlets.gradle b/examples/gradle/servlets.gradle
index 4045c347..57280fd0 100644
--- a/examples/gradle/servlets.gradle
+++ b/examples/gradle/servlets.gradle
@@ -67,7 +67,7 @@ task ('proguard', type: proguard.gradle.ProGuardTask) {
 
     // Preserve all native method names and the names of their classes.
 
-    keepclasseswithmembernames,includedescriptorclasses 'class * { \
+    keepclasseswithmembernames includedescriptorclasses: true, 'class * { \
         native <methods>; \
     }'