diff --git a/src/main/java/xyz/wagyourtail/jvmdg/cli/Main.java b/src/main/java/xyz/wagyourtail/jvmdg/cli/Main.java
index 362ae1c3..a5deaf95 100644
--- a/src/main/java/xyz/wagyourtail/jvmdg/cli/Main.java
+++ b/src/main/java/xyz/wagyourtail/jvmdg/cli/Main.java
@@ -278,6 +278,9 @@ public static void shade(Map<String, List<String[]>> args) throws IOException {
             List<String> prefixes = new ArrayList<>();
             List<String[]> prefix = args.get("--prefix");
             for (String[] strings : prefix) {
+                if (!strings[0].endsWith("/")) {
+                    strings[0] += "/";
+                }
                 prefixes.add(strings[0]);
             }