diff --git a/src/controllers/DonationController.ts b/src/controllers/DonationController.ts
index 9636000..0babc14 100644
--- a/src/controllers/DonationController.ts
+++ b/src/controllers/DonationController.ts
@@ -40,7 +40,7 @@ export class DonationController {
 		let responseDonations: ResponseDonation[] = new Array<ResponseDonation>();
 		let donations: Array<Donation>;
 
-		if (page) {
+		if (page != undefined) {
 			donations = await this.donationRepository.find({ relations: ['runner', 'donor', 'runner.scans', 'runner.scans.track'], skip: page * page_size, take: page_size });
 		} else {
 			donations = await this.donationRepository.find({ relations: ['runner', 'donor', 'runner.scans', 'runner.scans.track'] });
diff --git a/src/controllers/DonorController.ts b/src/controllers/DonorController.ts
index 577ffc1..eeb9a3b 100644
--- a/src/controllers/DonorController.ts
+++ b/src/controllers/DonorController.ts
@@ -29,7 +29,7 @@ export class DonorController {
 		let responseDonors: ResponseDonor[] = new Array<ResponseDonor>();
 		let donors: Array<Donor>;
 
-		if (page) {
+		if (page != undefined) {
 			donors = await this.donorRepository.find({ relations: ['donations', 'donations.runner', 'donations.runner.scans', 'donations.runner.scans.track'], skip: page * page_size, take: page_size });
 		} else {
 			donors = await this.donorRepository.find({ relations: ['donations', 'donations.runner', 'donations.runner.scans', 'donations.runner.scans.track'] });
diff --git a/src/controllers/GroupContactController.ts b/src/controllers/GroupContactController.ts
index 81e45c8..27e5d7d 100644
--- a/src/controllers/GroupContactController.ts
+++ b/src/controllers/GroupContactController.ts
@@ -30,7 +30,7 @@ export class GroupContactController {
 		let responseContacts: ResponseGroupContact[] = new Array<ResponseGroupContact>();
 		let contacts: Array<GroupContact>;
 
-		if (page) {
+		if (page != undefined) {
 			contacts = await this.contactRepository.find({ relations: ['groups', 'groups.parentGroup'], skip: page * page_size, take: page_size });
 		} else {
 			contacts = await this.contactRepository.find({ relations: ['groups', 'groups.parentGroup'] });
diff --git a/src/controllers/PermissionController.ts b/src/controllers/PermissionController.ts
index 990ad62..a9099a2 100644
--- a/src/controllers/PermissionController.ts
+++ b/src/controllers/PermissionController.ts
@@ -31,7 +31,7 @@ export class PermissionController {
         let responsePermissions: ResponsePermission[] = new Array<ResponsePermission>();
         let permissions: Array<Permission>;
 
-        if (page) {
+        if (page != undefined) {
             permissions = await this.permissionRepository.find({ relations: ['principal'], skip: page * page_size, take: page_size });
         } else {
             permissions = await this.permissionRepository.find({ relations: ['principal'] });
diff --git a/src/controllers/RunnerCardController.ts b/src/controllers/RunnerCardController.ts
index e4e246e..fbe21f8 100644
--- a/src/controllers/RunnerCardController.ts
+++ b/src/controllers/RunnerCardController.ts
@@ -30,7 +30,7 @@ export class RunnerCardController {
 		let responseCards: ResponseRunnerCard[] = new Array<ResponseRunnerCard>();
 		let cards: Array<RunnerCard>;
 
-		if (page) {
+		if (page != undefined) {
 			cards = await this.cardRepository.find({ relations: ['runner', 'runner.group', 'runner.group.parentGroup'], skip: page * page_size, take: page_size });
 		} else {
 			cards = await this.cardRepository.find({ relations: ['runner', 'runner.group', 'runner.group.parentGroup'] });
diff --git a/src/controllers/RunnerController.ts b/src/controllers/RunnerController.ts
index e25dcd0..7615ef0 100644
--- a/src/controllers/RunnerController.ts
+++ b/src/controllers/RunnerController.ts
@@ -34,7 +34,7 @@ export class RunnerController {
 		let responseRunners: ResponseRunner[] = new Array<ResponseRunner>();
 		let runners: Array<Runner>;
 
-		if (page) {
+		if (page != undefined) {
 			runners = await this.runnerRepository.find({ relations: ['scans', 'group', 'group.parentGroup', 'scans.track'], skip: page * page_size, take: page_size });
 		} else {
 			runners = await this.runnerRepository.find({ relations: ['scans', 'group', 'group.parentGroup', 'scans.track'] });
diff --git a/src/controllers/RunnerOrganizationController.ts b/src/controllers/RunnerOrganizationController.ts
index 32bc508..19cf775 100644
--- a/src/controllers/RunnerOrganizationController.ts
+++ b/src/controllers/RunnerOrganizationController.ts
@@ -33,7 +33,7 @@ export class RunnerOrganizationController {
 		let responseOrgs: ResponseRunnerOrganization[] = new Array<ResponseRunnerOrganization>();
 		let orgs: Array<RunnerOrganization>;
 
-		if (page) {
+		if (page != undefined) {
 			orgs = await this.runnerOrganizationRepository.find({ relations: ['contact', 'teams'], skip: page * page_size, take: page_size });
 		} else {
 			orgs = await this.runnerOrganizationRepository.find({ relations: ['contact', 'teams'] });
diff --git a/src/controllers/RunnerTeamController.ts b/src/controllers/RunnerTeamController.ts
index e363217..b7536ea 100644
--- a/src/controllers/RunnerTeamController.ts
+++ b/src/controllers/RunnerTeamController.ts
@@ -31,7 +31,7 @@ export class RunnerTeamController {
 		let responseTeams: ResponseRunnerTeam[] = new Array<ResponseRunnerTeam>();
 		let teams: Array<RunnerTeam>;
 
-		if (page) {
+		if (page != undefined) {
 			teams = await this.runnerTeamRepository.find({ relations: ['parentGroup', 'contact'], skip: page * page_size, take: page_size });
 		} else {
 			teams = await this.runnerTeamRepository.find({ relations: ['parentGroup', 'contact'] });
diff --git a/src/controllers/ScanController.ts b/src/controllers/ScanController.ts
index 5ffa5d3..1691185 100644
--- a/src/controllers/ScanController.ts
+++ b/src/controllers/ScanController.ts
@@ -38,7 +38,7 @@ export class ScanController {
 		let responseScans: ResponseScan[] = new Array<ResponseScan>();
 		let scans: Array<Scan>;
 
-		if (page) {
+		if (page != undefined) {
 			scans = await this.scanRepository.find({ relations: ['runner', 'track'], skip: page * page_size, take: page_size });
 		} else {
 			scans = await this.scanRepository.find({ relations: ['runner', 'track'] });
diff --git a/src/controllers/ScanStationController.ts b/src/controllers/ScanStationController.ts
index f64605b..0740a20 100644
--- a/src/controllers/ScanStationController.ts
+++ b/src/controllers/ScanStationController.ts
@@ -30,7 +30,7 @@ export class ScanStationController {
 		let responseStations: ResponseScanStation[] = new Array<ResponseScanStation>();
 		let stations: Array<ScanStation>;
 
-		if (page) {
+		if (page != undefined) {
 			stations = await this.stationRepository.find({ relations: ['track'], skip: page * page_size, take: page_size });
 		} else {
 			stations = await this.stationRepository.find({ relations: ['track'] });
diff --git a/src/controllers/StatsClientController.ts b/src/controllers/StatsClientController.ts
index 1447ac3..f759fc7 100644
--- a/src/controllers/StatsClientController.ts
+++ b/src/controllers/StatsClientController.ts
@@ -28,7 +28,7 @@ export class StatsClientController {
 		let responseClients: ResponseStatsClient[] = new Array<ResponseStatsClient>();
 		let clients: Array<StatsClient>;
 
-		if (page) {
+		if (page != undefined) {
 			clients = await this.clientRepository.find({ skip: page * page_size, take: page_size });
 		} else {
 			clients = await this.clientRepository.find();
diff --git a/src/controllers/TrackController.ts b/src/controllers/TrackController.ts
index 15ade97..8762061 100644
--- a/src/controllers/TrackController.ts
+++ b/src/controllers/TrackController.ts
@@ -29,7 +29,7 @@ export class TrackController {
 		let responseTracks: ResponseTrack[] = new Array<ResponseTrack>();
 		let tracks: Array<Track>;
 
-		if (page) {
+		if (page != undefined) {
 			tracks = await this.trackRepository.find({ skip: page * page_size, take: page_size });
 		}
 		else {
diff --git a/src/controllers/UserController.ts b/src/controllers/UserController.ts
index 2d1b796..312ce8a 100644
--- a/src/controllers/UserController.ts
+++ b/src/controllers/UserController.ts
@@ -32,7 +32,7 @@ export class UserController {
 		let responseUsers: ResponseUser[] = new Array<ResponseUser>();
 		let users: Array<User>;
 
-		if (page) {
+		if (page != undefined) {
 			users = await this.userRepository.find({ relations: ['permissions', 'groups', 'groups.permissions'], skip: page * page_size, take: page_size });
 		}
 		else {
diff --git a/src/controllers/UserGroupController.ts b/src/controllers/UserGroupController.ts
index be948ac..b9d9fb1 100644
--- a/src/controllers/UserGroupController.ts
+++ b/src/controllers/UserGroupController.ts
@@ -31,7 +31,7 @@ export class UserGroupController {
 		let responseGroups: ResponseUserGroup[] = new Array<ResponseUserGroup>();
 		let groups: Array<UserGroup>;
 
-		if (page) {
+		if (page != undefined) {
 			groups = await this.userGroupsRepository.find({ relations: ['permissions'], skip: page * page_size, take: page_size });
 		} else {
 			groups = await this.userGroupsRepository.find({ relations: ['permissions'] });