diff --git a/leiningen-core/src/leiningen/core/classpath.clj b/leiningen-core/src/leiningen/core/classpath.clj
index 50adcee9..0db9e5dc 100644
--- a/leiningen-core/src/leiningen/core/classpath.clj
+++ b/leiningen-core/src/leiningen/core/classpath.clj
@@ -382,7 +382,7 @@
         (doseq [r ranges]
           (warn r)))
       (warn "\nConsider using these exclusions:")
-      (doseq [ex exclusions]
+      (doseq [ex (distinct exclusions)]
         (warn ex))
       (warn))))