diff --git a/sql/swad.sql b/sql/swad.sql
index 01add25f6..6631cf8a7 100644
--- a/sql/swad.sql
+++ b/sql/swad.sql
@@ -1408,7 +1408,7 @@ CREATE TABLE IF NOT EXISTS usr_data (
 	FamilyAddress VARCHAR(2047) NOT NULL DEFAULT '',
 	FamilyPhone CHAR(16) NOT NULL DEFAULT '',
 	OriginPlace VARCHAR(2047) NOT NULL DEFAULT '',
-	Birthday DATE NOT NULL,
+	Birthday DATE,
 	Comments TEXT NOT NULL,
 	Menu TINYINT NOT NULL DEFAULT 0,
 	SideCols TINYINT NOT NULL DEFAULT 3,
diff --git a/swad_changelog.h b/swad_changelog.h
index 191741e29..2c86b437e 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -497,7 +497,7 @@ enscript -2 --landscape --color --file-align=2 --highlight --line-numbers -o - *
 En OpenSWAD:
 ps2pdf source.ps destination.pdf
 */
-#define Log_PLATFORM_VERSION	"SWAD 19.145.1 (2020-03-07)"
+#define Log_PLATFORM_VERSION	"SWAD 19.145.2 (2020-03-09)"
 #define CSS_FILE		"swad19.144.1.css"
 #define JS_FILE			"swad19.91.1.js"
 /*
@@ -526,7 +526,8 @@ Param
 // TODO: Oresti Baños: cambiar ojos por candados en descriptores para prohibir/permitir y dejar los ojos para poder elegir descriptores
 // TODO: Comprobar los resultados de partidas de juegos con preguntas eliminadas
 
-	Version 19.145.1: Mar 07, 2020	Changes in edition of games. (282365 lines)
+	Version 19.145.2: Mar 09, 2020	Fixed bug in database table with users' data. (282366 lines)
+	Version 19.145.1: Mar 08, 2020	Changes in edition of games. (282365 lines)
 	Version 19.145:   Mar 07, 2020	Fixed bug in log.
 					Fixed bug in matches, reported by Eva Martínez Ortigosa. (282346 lines)
 	Version 19.144.3: Mar 06, 2020	New social network: twitch. (282286 lines)
diff --git a/swad_database.c b/swad_database.c
index 9c736bdd8..f2c3dd27e 100644
--- a/swad_database.c
+++ b/swad_database.c
@@ -3001,7 +3001,7 @@ mysql> DESCRIBE usr_data;
 			"FamilyAddress VARCHAR(2047) NOT NULL DEFAULT '',"	// Usr_MAX_BYTES_ADDRESS
 			"FamilyPhone CHAR(16) NOT NULL DEFAULT '',"		// Usr_MAX_BYTES_PHONE
 			"OriginPlace VARCHAR(2047) NOT NULL DEFAULT '',"	// Usr_MAX_BYTES_ADDRESS
-			"Birthday DATE NOT NULL,"
+			"Birthday DATE,"
 			"Comments TEXT NOT NULL,"				// Cns_MAX_BYTES_TEXT
 			"Menu TINYINT NOT NULL DEFAULT 0,"
 			"SideCols TINYINT NOT NULL DEFAULT 3,"