diff --git a/client/mysqlslap.c b/client/mysqlslap.c
index 2dc80e09337..93781504b57 100644
--- a/client/mysqlslap.c
+++ b/client/mysqlslap.c
@@ -377,7 +377,8 @@ static struct my_option my_long_options[] =
   {"create-schema", OPT_CREATE_SLAP_SCHEMA, "Schema to run tests in.",
     (gptr*) &create_schema_string, (gptr*) &create_schema_string, 0, GET_STR, 
     REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
-  {"csv", OPT_CREATE_SLAP_SCHEMA, "Schema to run tests in.",
+  {"csv", OPT_CREATE_SLAP_SCHEMA,
+	"Generate CSV output to named file or to stdout if no file is named.",
     (gptr*) &opt_csv_str, (gptr*) &opt_csv_str, 0, GET_STR, 
     OPT_ARG, 0, 0, 0, 0, 0, 0},
   {"debug", '#', "Output debug log. Often this is 'd:t:o,filename'.",