diff --git a/phpBB/index.php b/phpBB/index.php
index 419b66cfdb..63361c43c7 100644
--- a/phpBB/index.php
+++ b/phpBB/index.php
@@ -98,7 +98,7 @@ if ($config['load_birthdays'] && $config['allow_birthdays'])
 	{
 		$birthday_username	= get_username_string('full', $row['user_id'], $row['username'], $row['user_colour']);
 		$birthday_year		= (int) substr($row['user_birthday'], -4);
-		$birthday_age		= ($birthday_year) ? $now['year'] - $birthday_year : '';
+		$birthday_age		= ($birthday_year) ? max(0, $now['year'] - $birthday_year) : '';
 
 		$template->assign_block_vars('birthdays', array(
 			'USERNAME'	=> $birthday_username,
@@ -106,7 +106,10 @@ if ($config['load_birthdays'] && $config['allow_birthdays'])
 		));
 
 		// For 3.0 compatibility
-		$birthday_list[] = $birthday_username . (($birthday_year) ? ' (' . $birthday_age . ')' : '');
+		if ($age = (int) substr($row['user_birthday'], -4))
+		{
+			$birthday_list[] = $birthday_username . (($birthday_year) ? ' (' . $birthday_age . ')' : '');
+		}
 	}
 	$db->sql_freeresult($result);
 }
diff --git a/phpBB/memberlist.php b/phpBB/memberlist.php
index ec245795ad..1b6cb5ef94 100644
--- a/phpBB/memberlist.php
+++ b/phpBB/memberlist.php
@@ -1699,7 +1699,7 @@ function show_profile($data, $user_notes_enabled = false, $warn_user_enabled = f
 				$diff = ($diff < 0) ? 1 : 0;
 			}
 
-			$age = (int) ($now['year'] - $bday_year - $diff);
+			$age = max(0, (int) ($now['year'] - $bday_year - $diff));
 		}
 	}
 
diff --git a/phpBB/styles/prosilver/template/memberlist_view.html b/phpBB/styles/prosilver/template/memberlist_view.html
index 74f563f17d..f254ed1463 100644
--- a/phpBB/styles/prosilver/template/memberlist_view.html
+++ b/phpBB/styles/prosilver/template/memberlist_view.html
@@ -28,7 +28,7 @@
 		<!-- ENDIF -->
 		<!-- IF S_USER_INACTIVE --><dt>{L_USER_IS_INACTIVE}:</dt> <dd>{USER_INACTIVE_REASON}</dd><!-- ENDIF -->
 		<!-- IF LOCATION --><dt>{L_LOCATION}:</dt> <dd>{LOCATION}</dd><!-- ENDIF -->
-		<!-- IF AGE --><dt>{L_AGE}:</dt> <dd>{AGE}</dd><!-- ENDIF -->
+		<!-- IF AGE !== '' --><dt>{L_AGE}:</dt> <dd>{AGE}</dd><!-- ENDIF -->
 		<!-- IF OCCUPATION --><dt>{L_OCCUPATION}:</dt> <dd>{OCCUPATION}</dd><!-- ENDIF -->
 		<!-- IF INTERESTS --><dt>{L_INTERESTS}:</dt> <dd>{INTERESTS}</dd><!-- ENDIF -->
 		<!-- IF S_GROUP_OPTIONS --><dt>{L_USERGROUPS}:</dt> <dd><select name="g">{S_GROUP_OPTIONS}</select> <input type="submit" name="submit" value="{L_GO}" class="button2" /></dd><!-- ENDIF -->
diff --git a/phpBB/styles/subsilver2/template/memberlist_view.html b/phpBB/styles/subsilver2/template/memberlist_view.html
index c24c93a8fa..5059be1cf9 100644
--- a/phpBB/styles/subsilver2/template/memberlist_view.html
+++ b/phpBB/styles/subsilver2/template/memberlist_view.html
@@ -148,10 +148,10 @@
 				<td class="gen" align="{S_CONTENT_FLOW_END}" nowrap="nowrap">{L_LOCATION}: </td>
 				<td><!-- IF LOCATION --><b class="genmed">{LOCATION}</b><!-- ENDIF --></td>
 			</tr>
-			<!-- IF AGE -->
+			<!-- IF AGE !== '' -->
 			<tr>
 				<td class="gen" align="{S_CONTENT_FLOW_END}" nowrap="nowrap">{L_AGE}: </td>
-				<td><b class="genmed"><!-- IF AGE -->{AGE}<!-- ELSE --> - <!-- ENDIF --></b></td>
+				<td><b class="genmed">{AGE}</b></td>
 			</tr>
 			<!-- ENDIF -->
 			<tr>