diff --git a/src/main/java/hudson/plugins/git/GitLastHashProperty.java b/src/main/java/hudson/plugins/git/GitLastHashProperty.java
index 64ba31d..714ae43 100644
--- a/src/main/java/hudson/plugins/git/GitLastHashProperty.java
+++ b/src/main/java/hudson/plugins/git/GitLastHashProperty.java
@@ -29,7 +29,6 @@ public boolean perform(AbstractBuild<?, ?> build, Launcher launcher, BuildListen
 		if (!(genericScm instanceof GitSCM))
 			return true;
 		GitSCM scm = (GitSCM)genericScm;
-		GitSCM scm = (GitSCM) build.getProject().getScm();
 		GitAPI git = new GitAPI(scm.getDescriptor(), launcher, build.getParent().getWorkspace(), listener);
 		String tipHash = git.revParse(scm.getRemoteBranch());