diff --git a/maven_plugin/src/main/java/io/github/chains_project/maven_lockfile/graph/DependencyNode.java b/maven_plugin/src/main/java/io/github/chains_project/maven_lockfile/graph/DependencyNode.java
index a1fd144e..9f390f2c 100644
--- a/maven_plugin/src/main/java/io/github/chains_project/maven_lockfile/graph/DependencyNode.java
+++ b/maven_plugin/src/main/java/io/github/chains_project/maven_lockfile/graph/DependencyNode.java
@@ -233,7 +233,7 @@ public String toString() {
     }
 
     public String getComparatorString() {
-        return this.getGroupId().getValue() + ":" + this.getArtifactId().getValue() + "@"
-                + this.getVersion().getValue() + "-" + this.getChecksum();
+        return this.getGroupId().getValue() + "#" + this.getArtifactId().getValue() + "#"
+                + this.getVersion().getValue() + "#" + this.getChecksum();
     }
 }