diff --git a/chapters/mining.adoc b/chapters/mining.adoc
index 6c7810d0..588f5797 100644
--- a/chapters/mining.adoc
+++ b/chapters/mining.adoc
@@ -1714,7 +1714,7 @@ signatures. Finally, the consensus rules may differ in unanticipated
 ways because of implicit consensus constraints imposed by system
 limitations or implementation details. An example of the latter was seen
 in the unanticipated hard fork during the upgrade of Bitcoin Core 0.7 to
-0.8, which was caused by a limitation in the Berkley DB implementation
+0.8, which was caused by a limitation in the Berkeley DB implementation
 used to store blocks.
 
 Conceptually, we can think of a hard fork as developing in four stages: