diff --git a/src/main/groovy/com/bancvue/gradle/maven/publish/ExtendedPublication.groovy b/src/main/groovy/com/bancvue/gradle/maven/publish/ExtendedPublication.groovy
index 4ad39e0..80ae959 100644
--- a/src/main/groovy/com/bancvue/gradle/maven/publish/ExtendedPublication.groovy
+++ b/src/main/groovy/com/bancvue/gradle/maven/publish/ExtendedPublication.groovy
@@ -88,6 +88,12 @@ class ExtendedPublication {
 	private void setJarTaskIfNotSet() {
 		if (archiveTask == null) {
 			archiveTask = findOrCreateJarTask()
+			assembleDependsOnArchiveTaskIfNotNull(archiveTask)
+		}
+	}
+
+	private void assembleDependsOnArchiveTaskIfNotNull(Jar archiveTask) {
+		if (archiveTask != null) {
 			project.getTasks().getByName(BasePlugin.ASSEMBLE_TASK_NAME).dependsOn(archiveTask);
 		}
 	}
@@ -95,7 +101,7 @@ class ExtendedPublication {
 	private void setSourceJarTaskIfNotSet() {
 		if (sourcesArchiveTask == null) {
 			sourcesArchiveTask = findOrCreateSourcesJarTask()
-			project.getTasks().getByName(BasePlugin.ASSEMBLE_TASK_NAME).dependsOn(sourcesArchiveTask);
+			assembleDependsOnArchiveTaskIfNotNull(sourcesArchiveTask)
 		}
 	}