diff --git a/system/database/drivers/odbc/odbc_driver.php b/system/database/drivers/odbc/odbc_driver.php
index 98fd806..b493e93 100644
--- a/system/database/drivers/odbc/odbc_driver.php
+++ b/system/database/drivers/odbc/odbc_driver.php
@@ -64,7 +64,7 @@
 		$this->_random_keyword = ' RND('.time().')'; // database specific random keyword
 
 		// Legacy support for DSN in the hostname field
-		if ($this->dsn == '')
+		if ($this->dsn === '')
 		{
 			$this->dsn = $this->hostname;
 		}
@@ -256,7 +256,7 @@
 	{
 		$sql = "SHOW TABLES FROM `".$this->database."`";
 
-		if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+		if ($prefix_limit !== FALSE AND $this->dbprefix !== '')
 		{
 			//$sql .= " LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
 			return FALSE; // not currently supported
diff --git a/system/database/drivers/odbc/odbc_forge.php b/system/database/drivers/odbc/odbc_forge.php
index d59b8a9..ce7a1d2 100644
--- a/system/database/drivers/odbc/odbc_forge.php
+++ b/system/database/drivers/odbc/odbc_forge.php
@@ -163,14 +163,14 @@
 		$sql = 'ALTER TABLE '.$this->db->protect_identifiers($table).' '.$alter_type.' '.$this->db->protect_identifiers($column_name);
 
 		// DROP has everything it needs now.
-		if ($alter_type == 'DROP')
+		if ($alter_type === 'DROP')
 		{
 			return $sql;
 		}
 
 		$sql .= " $column_definition";
 
-		if ($default_value != '')
+		if ($default_value !== '')
 		{
 			$sql .= " DEFAULT \"$default_value\"";
 		}
@@ -184,7 +184,7 @@
 			$sql .= ' NOT NULL';
 		}
 
-		if ($after_field != '')
+		if ($after_field !== '')
 		{
 			return $sql.' AFTER '.$this->db->protect_identifiers($after_field);
 		}