diff --git a/lib/sonata.h b/lib/soprano.h
similarity index 89%
rename from lib/sonata.h
rename to lib/soprano.h
index debc0b08..591dc268 100644
--- a/lib/sonata.h
+++ b/lib/soprano.h
@@ -1,5 +1,5 @@
-#ifndef SONATA_H_
-#define SONATA_H_
+#ifndef SOPRANO_H_
+#define SOPRANO_H_
 
 /*
  * soprano.