diff --git a/examples/lib/bld/bld-wrapper.properties b/examples/lib/bld/bld-wrapper.properties
index 81004ac..113b890 100644
--- a/examples/lib/bld/bld-wrapper.properties
+++ b/examples/lib/bld/bld-wrapper.properties
@@ -1,6 +1,6 @@
 bld.downloadExtensionJavadoc=false
 bld.downloadExtensionSources=true
-bld.extensions=com.uwyn.rife2:bld-kotlin:0.9.5
+bld.extensions=com.uwyn.rife2:bld-kotlin:0.9.4
 bld.repositories=MAVEN_LOCAL,MAVEN_CENTRAL,RIFE2_SNAPSHOTS,RIFE2_RELEASES
 bld.downloadLocation=
 bld.sourceDirectories=
diff --git a/examples/src/bld/java/com/example/ExampleBuild.java b/examples/src/bld/java/com/example/ExampleBuild.java
index 71edf27..d4ef292 100644
--- a/examples/src/bld/java/com/example/ExampleBuild.java
+++ b/examples/src/bld/java/com/example/ExampleBuild.java
@@ -111,7 +111,6 @@ public class ExampleBuild extends Project {
     public void javadoc() throws ExitStatusException, IOException, InterruptedException {
         new DokkaOperation()
                 .fromProject(this)
-                .failOnWarning(true)
                 .loggingLevel(LoggingLevel.INFO)
                 // Create build/javadoc
                 .outputDir(new File(buildDirectory(), "javadoc"))
diff --git a/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java b/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java
index f24da97..1d413fb 100644
--- a/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java
+++ b/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java
@@ -33,7 +33,7 @@ public class CompileKotlinOperationBuild extends Project {
     public CompileKotlinOperationBuild() {
         pkg = "rife.bld.extension";
         name = "bld-kotlin";
-        version = version(0, 9, 5);
+        version = version(0, 9, 4);
 
         javaRelease = 17;
         downloadSources = true;
diff --git a/src/main/java/rife/bld/extension/dokka/DokkaOperation.java b/src/main/java/rife/bld/extension/dokka/DokkaOperation.java
index 6d51006..0b0936e 100644
--- a/src/main/java/rife/bld/extension/dokka/DokkaOperation.java
+++ b/src/main/java/rife/bld/extension/dokka/DokkaOperation.java
@@ -131,11 +131,13 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
         // -delayTemplateSubstitution
         if (delayTemplateSubstitution_) {
             args.add("-delayTemplateSubstitution");
+            args.add(String.valueOf(delayTemplateSubstitution_));
         }
 
         // -failOnWarning
         if (failOnWarning_) {
             args.add("-failOnWarning");
+            args.add(String.valueOf(failOnWarning_));
         }
 
         // -globalLinks_
@@ -186,11 +188,13 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
         // -noSuppressObviousFunctions
         if (noSuppressObviousFunctions_) {
             args.add("-noSuppressObviousFunctions");
+            args.add(String.valueOf(noSuppressObviousFunctions_));
         }
 
         // -offlineMode
         if (offlineMode_) {
             args.add("-offlineMode");
+            args.add(String.valueOf(offlineMode_));
         }
 
         // -pluginConfiguration
@@ -205,6 +209,7 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
         // -suppressInheritedMembers
         if (suppressInheritedMembers_) {
             args.add("-suppressInheritedMembers");
+            args.add(String.valueOf(suppressInheritedMembers_));
         }
 
         if (LOGGER.isLoggable(Level.FINE)) {
diff --git a/src/test/java/rife/bld/extension/dokka/DokkaOperationTest.java b/src/test/java/rife/bld/extension/dokka/DokkaOperationTest.java
index 864d6fa..fbdac6d 100644
--- a/src/test/java/rife/bld/extension/dokka/DokkaOperationTest.java
+++ b/src/test/java/rife/bld/extension/dokka/DokkaOperationTest.java
@@ -68,8 +68,8 @@ class DokkaOperationTest {
                         path + "/lib/bld/kotlin-as-java-plugin-" + dokkaJar + ";path1;path2;path3;path4",
                 "-sourceSet", "-src " + path + "/src/main/kotlin",
                 "-outputDir", path + "/build",
-                "-delayTemplateSubstitution",
-                "-failOnWarning",
+                "-delayTemplateSubstitution", "true",
+                "-failOnWarning", "true",
                 "-globalLinks", "s^link^^s2^link2",
                 "-globalPackageOptions", "option1;option2;option3;option4",
                 "-globalSrcLinks_", "link1;link2;link3;link4",
@@ -77,10 +77,10 @@ class DokkaOperationTest {
                 "-loggingLevel", "debug",
                 "-moduleName", "name",
                 "-moduleVersion", "1.0",
-                "-noSuppressObviousFunctions",
-                "-offlineMode",
+                "-noSuppressObviousFunctions", "true",
+                "-offlineMode", "true",
                 "-pluginConfiguration", "{name}={\\\"json\\\"}^^{\\\"name2\\\"}={json2}",
-                "-suppressInheritedMembers");
+                "-suppressInheritedMembers", "true");
 
         assertThat(args).hasSize(matches.size());