diff --git a/externals/Makefile.am b/externals/Makefile.am
index 32b3de78c3..0eb2299541 100644
--- a/externals/Makefile.am
+++ b/externals/Makefile.am
@@ -4,7 +4,7 @@ DB = db-4.5.20
 
 $(DB).tar.gz:
 	@echo "Nix requires Berkeley DB to build."
-	@echo "Please download version 4.4.20 from"
+	@echo "Please download version 4.5.20 from"
 	@echo "  http://download-east.oracle.com/berkeley-db/db-4.5.20.tar.gz"
 	@echo "and place it in the externals/ directory."
 	false