diff --git a/src/cpp/ripple/DBInit.cpp b/src/cpp/ripple/DBInit.cpp
index bdc6c29b5..fcf5a3a84 100644
--- a/src/cpp/ripple/DBInit.cpp
+++ b/src/cpp/ripple/DBInit.cpp
@@ -20,7 +20,7 @@ const char *TxnDBInit[] = {
 		TxnMeta		BLOB						\
 	);",
 	"CREATE TABLE AccountTransactions (			\
-		TransID		CHARACTER(64),				\
+		TransID		CHARACTER(64) PRIMARY KEY,	\
 		Account		CHARACTER(64),				\
 		LedgerSeq	BIGINT UNSIGNED				\
 	);",