diff --git a/dependency-check-utils/src/main/java/org/owasp/dependencycheck/utils/FileUtils.java b/dependency-check-utils/src/main/java/org/owasp/dependencycheck/utils/FileUtils.java
index b066bb884..11b0aa3af 100644
--- a/dependency-check-utils/src/main/java/org/owasp/dependencycheck/utils/FileUtils.java
+++ b/dependency-check-utils/src/main/java/org/owasp/dependencycheck/utils/FileUtils.java
@@ -61,7 +61,7 @@ public final class FileUtils {
         String ret = null;
         final int pos = fileName.lastIndexOf(".");
         if (pos >= 0) {
-            ret = fileName.substring(pos + 1, fileName.length()).toLowerCase();
+            ret = fileName.substring(pos + 1).toLowerCase();
         }
         return ret;
     }