diff --git a/app/src/main/kotlin/org/nixos/gradle2nix/Process.kt b/app/src/main/kotlin/org/nixos/gradle2nix/Process.kt
index 1b6b1e2..c8b61ec 100644
--- a/app/src/main/kotlin/org/nixos/gradle2nix/Process.kt
+++ b/app/src/main/kotlin/org/nixos/gradle2nix/Process.kt
@@ -52,6 +52,7 @@ fun processDependencies(config: Config): Map<String, Map<String, Artifact>> {
         .flatMap { it.allDependencies.asSequence() }
         .groupBy { it.id }
         .mapNotNull { (id, dependencies) ->
+            if (id.startsWith("project ")) return@mapNotNull null
             val deps = dependencies.toSet()
             if (deps.isEmpty()) {
                 config.logger.warn("$id: no resolved dependencies in dependency graph")