diff --git a/phpBB/adm/style/acp_search.html b/phpBB/adm/style/acp_search.html
index 0736d22fe7..f7ad3c5e89 100644
--- a/phpBB/adm/style/acp_search.html
+++ b/phpBB/adm/style/acp_search.html
@@ -30,7 +30,7 @@
 	</dl>
 	<dl>
 		<dt><label for="min_search_author_chars">{L_MIN_SEARCH_AUTHOR_CHARS}{L_COLON}</label><br /><span>{L_MIN_SEARCH_AUTHOR_CHARS_EXPLAIN}</span></dt>
-		<dd><input id="min_search_author_chars" size="4" maxlength="4" min="0" max="9999" name="config[min_search_author_chars]" value="{MIN_SEARCH_AUTHOR_CHARS}" /></dd>
+		<dd><input id="min_search_author_chars" type="number" min="0" max="9999" name="config[min_search_author_chars]" value="{MIN_SEARCH_AUTHOR_CHARS}" /></dd>
 	</dl>
 	<dl>
 		<dt><label for="max_num_search_keywords">{L_MAX_NUM_SEARCH_KEYWORDS}{L_COLON}</label><br /><span>{L_MAX_NUM_SEARCH_KEYWORDS_EXPLAIN}</span></dt>
diff --git a/phpBB/includes/acp/acp_attachments.php b/phpBB/includes/acp/acp_attachments.php
index b0e0711b22..7e348aa45b 100644
--- a/phpBB/includes/acp/acp_attachments.php
+++ b/phpBB/includes/acp/acp_attachments.php
@@ -1736,7 +1736,7 @@ class acp_attachments
 		$value = $filesize['value'];
 
 		// size and maxlength must not be specified for input of type number
-		return '<input type="number" id="' . $key . '" min="0" name="config[' . $key . ']" value="' . $value . '" /> <select name="' . $key . '">' . size_select_options($size_var) . '</select>';
+		return '<input type="number" id="' . $key . '" min="0" max="999999999999999" name="config[' . $key . ']" value="' . $value . '" /> <select name="' . $key . '">' . size_select_options($size_var) . '</select>';
 	}
 
 	/**
diff --git a/phpBB/phpbb/search/fulltext_sphinx.php b/phpBB/phpbb/search/fulltext_sphinx.php
index e935b0f6d1..0dbc6e33df 100644
--- a/phpBB/phpbb/search/fulltext_sphinx.php
+++ b/phpBB/phpbb/search/fulltext_sphinx.php
@@ -952,11 +952,11 @@ class fulltext_sphinx
 		</dl>
 		<dl>
 			<dt><label for="fulltext_sphinx_port">' . $this->user->lang['FULLTEXT_SPHINX_PORT'] . $this->user->lang['COLON'] . '</label><br /><span>' . $this->user->lang['FULLTEXT_SPHINX_PORT_EXPLAIN'] . '</span></dt>
-			<dd><input id="fulltext_sphinx_port" type="number" name="config[fulltext_sphinx_port]" value="' . $this->config['fulltext_sphinx_port'] . '" /></dd>
+			<dd><input id="fulltext_sphinx_port" type="number" min="0" max="9999999999" name="config[fulltext_sphinx_port]" value="' . $this->config['fulltext_sphinx_port'] . '" /></dd>
 		</dl>
 		<dl>
 			<dt><label for="fulltext_sphinx_indexer_mem_limit">' . $this->user->lang['FULLTEXT_SPHINX_INDEXER_MEM_LIMIT'] . $this->user->lang['COLON'] . '</label><br /><span>' . $this->user->lang['FULLTEXT_SPHINX_INDEXER_MEM_LIMIT_EXPLAIN'] . '</span></dt>
-			<dd><input id="fulltext_sphinx_indexer_mem_limit" type="number" name="config[fulltext_sphinx_indexer_mem_limit]" value="' . $this->config['fulltext_sphinx_indexer_mem_limit'] . '" /> ' . $this->user->lang['MIB'] . '</dd>
+			<dd><input id="fulltext_sphinx_indexer_mem_limit" type="number" min="0" max="9999999999" name="config[fulltext_sphinx_indexer_mem_limit]" value="' . $this->config['fulltext_sphinx_indexer_mem_limit'] . '" /> ' . $this->user->lang['MIB'] . '</dd>
 		</dl>
 		<dl>
 			<dt><label for="fulltext_sphinx_config_file">' . $this->user->lang['FULLTEXT_SPHINX_CONFIG_FILE'] . $this->user->lang['COLON'] . '</label><br /><span>' . $this->user->lang['FULLTEXT_SPHINX_CONFIG_FILE_EXPLAIN'] . '</span></dt>
diff --git a/phpBB/styles/prosilver/template/pagination.html b/phpBB/styles/prosilver/template/pagination.html
index 29aae53026..88c67459c2 100644
--- a/phpBB/styles/prosilver/template/pagination.html
+++ b/phpBB/styles/prosilver/template/pagination.html
@@ -7,7 +7,7 @@
 			<ul class="dropdown-contents">
 				<li>{L_JUMP_TO_PAGE}{L_COLON}</li>
 				<li class="page-jump-form">
-					<input type="number" name="page-number" min="1" title="{L_JUMP_PAGE}" class="inputbox tiny" data-per-page="{PER_PAGE}" data-base-url="{BASE_URL|e('html_attr')}" data-start-name="{START_NAME}" />
+					<input type="number" name="page-number" min="1" max="999999" title="{L_JUMP_PAGE}" class="inputbox tiny" data-per-page="{PER_PAGE}" data-base-url="{BASE_URL|e('html_attr')}" data-start-name="{START_NAME}" />
 					<input class="button2" value="{L_GO}" type="button" />
 				</li>
 			</ul>