diff --git a/lib/sign/HmacSigner.cfc b/lib/sign/HmacSigner.cfc
index e0cffe1..4dc60ec 100644
--- a/lib/sign/HmacSigner.cfc
+++ b/lib/sign/HmacSigner.cfc
@@ -162,8 +162,8 @@ component
 		var expectedSignature = sign( message );
 
 		// Compare the two binary values using a quick hash.
-		return( hash( signature ) == hash( expectedSignature ) );
+		return( hash( toString( signature ) ) == hash( toString( expectedSignature ) ) );
 
 	}
 
-}
\ No newline at end of file
+}