diff --git a/lib/WeBWorK/DB/Record/Key.pm b/lib/WeBWorK/DB/Record/Key.pm
index b6381f66c5..6dc1a0dc6d 100644
--- a/lib/WeBWorK/DB/Record/Key.pm
+++ b/lib/WeBWorK/DB/Record/Key.pm
@@ -30,7 +30,7 @@ BEGIN {
 		user_id   => { type => "VARCHAR(100) NOT NULL", key => 1 },
 		key       => { type => "TEXT" },
 		timestamp => { type => "BIGINT" },
-		session   => { type => "TEXT NOT NULL DEFAULT '{}'" },
+		session   => { type => "TEXT NOT NULL DEFAULT ('{}')" },
 	);
 }
 
diff --git a/lib/WeBWorK/DB/Record/LTILaunchData.pm b/lib/WeBWorK/DB/Record/LTILaunchData.pm
index 46e7619848..b198330045 100644
--- a/lib/WeBWorK/DB/Record/LTILaunchData.pm
+++ b/lib/WeBWorK/DB/Record/LTILaunchData.pm
@@ -30,7 +30,7 @@ BEGIN {
 		state     => { type => "VARCHAR(200) NOT NULL", key => 1 },
 		nonce     => { type => "TEXT NOT NULL" },
 		timestamp => { type => "BIGINT" },
-		data      => { type => "TEXT NOT NULL DEFAULT '{}'" }
+		data      => { type => "TEXT NOT NULL DEFAULT ('{}')" }
 	);
 }