diff --git a/dependency-check-core/src/main/java/org/owasp/dependencycheck/dependency/Dependency.java b/dependency-check-core/src/main/java/org/owasp/dependencycheck/dependency/Dependency.java
index 38a628baa..6ebac02b6 100644
--- a/dependency-check-core/src/main/java/org/owasp/dependencycheck/dependency/Dependency.java
+++ b/dependency-check-core/src/main/java/org/owasp/dependencycheck/dependency/Dependency.java
@@ -130,6 +130,10 @@ public class Dependency implements Comparable<Dependency> {
      */
     public void setActualFilePath(String actualFilePath) {
         this.actualFilePath = actualFilePath;
+        if (this.sha1sum == null) {
+            File f = new File(this.actualFilePath);
+            determineHashes(f);
+        }
     }
 
     /**