diff --git a/lib/PhpParser/Error.php b/lib/PhpParser/Error.php
index 4cdf108..21d67d5 100644
--- a/lib/PhpParser/Error.php
+++ b/lib/PhpParser/Error.php
@@ -93,7 +93,7 @@ class Error extends \RuntimeException
     }
 
     /**
-     * Gets the start column (0-based) into the line where the error started.
+     * Gets the start column (1-based) into the line where the error started.
      *
      * @param string $code Source code of the file
      * @return int
@@ -107,7 +107,7 @@ class Error extends \RuntimeException
     }
 
     /**
-     * Gets the end column (0-based) into the line where the error ended.
+     * Gets the end column (1-based) into the line where the error ended.
      *
      * @param string $code Source code of the file
      * @return int
@@ -130,7 +130,7 @@ class Error extends \RuntimeException
             $lineStartPos = -1;
         }
 
-        return $pos - $lineStartPos - 1;
+        return $pos - $lineStartPos;
     }
 
     /**
diff --git a/test/PhpParser/ErrorTest.php b/test/PhpParser/ErrorTest.php
index a94e542..781eeb3 100644
--- a/test/PhpParser/ErrorTest.php
+++ b/test/PhpParser/ErrorTest.php
@@ -49,21 +49,21 @@ class ErrorTest extends \PHPUnit_Framework_TestCase
     public function provideTestColumnInfo() {
         return array(
             // Error at "bar"
-            array("<?php foo bar baz", 10, 12, 10, 12),
-            array("<?php\nfoo bar baz", 10, 12, 4, 6),
-            array("<?php foo\nbar baz", 10, 12, 0, 2),
-            array("<?php foo bar\nbaz", 10, 12, 10, 12),
-            array("<?php\r\nfoo bar baz", 11, 13, 4, 6),
+            array("<?php foo bar baz", 10, 12, 11, 13),
+            array("<?php\nfoo bar baz", 10, 12, 5, 7),
+            array("<?php foo\nbar baz", 10, 12, 1, 3),
+            array("<?php foo bar\nbaz", 10, 12, 11, 13),
+            array("<?php\r\nfoo bar baz", 11, 13, 5, 7),
             // Error at "baz"
-            array("<?php foo bar baz", 14, 16, 14, 16),
-            array("<?php foo bar\nbaz", 14, 16, 0, 2),
+            array("<?php foo bar baz", 14, 16, 15, 17),
+            array("<?php foo bar\nbaz", 14, 16, 1, 3),
             // Error at string literal
-            array("<?php foo 'bar\nbaz' xyz", 10, 18, 10, 3),
-            array("<?php\nfoo 'bar\nbaz' xyz", 10, 18, 4, 3),
-            array("<?php foo\n'\nbarbaz\n'\nxyz", 10, 19, 0, 0),
+            array("<?php foo 'bar\nbaz' xyz", 10, 18, 11, 4),
+            array("<?php\nfoo 'bar\nbaz' xyz", 10, 18, 5, 4),
+            array("<?php foo\n'\nbarbaz\n'\nxyz", 10, 19, 1, 1),
             // Error over full string
-            array("<?php", 0, 4, 0, 4),
-            array("<?\nphp", 0, 5, 0, 2),
+            array("<?php", 0, 4, 1, 5),
+            array("<?\nphp", 0, 5, 1, 3),
         );
     }
 
diff --git a/test/code/parser/expr/newWithoutClass.test-fail b/test/code/parser/expr/newWithoutClass.test-fail
index 4e444a1..1fb71a0 100644
--- a/test/code/parser/expr/newWithoutClass.test-fail
+++ b/test/code/parser/expr/newWithoutClass.test-fail
@@ -3,4 +3,4 @@ New without a class
 <?php
 new;
 -----
-Syntax error, unexpected ';' from 2:3 to 2:3
+Syntax error, unexpected ';' from 2:4 to 2:4
diff --git a/test/code/parser/stmt/class/modifier.test-fail b/test/code/parser/stmt/class/modifier.test-fail
index 666d143..0bb4144 100644
--- a/test/code/parser/stmt/class/modifier.test-fail
+++ b/test/code/parser/stmt/class/modifier.test-fail
@@ -26,7 +26,7 @@ Cannot use the final modifier on an abstract class member on line 1
 -----
 <?php abstract final class A { }
 -----
-Syntax error, unexpected T_FINAL, expecting T_CLASS from 1:15 to 1:19
+Syntax error, unexpected T_FINAL, expecting T_CLASS from 1:16 to 1:20
 -----
 <?php class A { abstract $a; }
 -----
diff --git a/test/code/parser/stmt/class/name.test-fail b/test/code/parser/stmt/class/name.test-fail
index dd698b6..9cee363 100644
--- a/test/code/parser/stmt/class/name.test-fail
+++ b/test/code/parser/stmt/class/name.test-fail
@@ -10,31 +10,31 @@ Cannot use 'parent' as class name as it is reserved on line 1
 -----
 <?php class static {}
 -----
-Syntax error, unexpected T_STATIC, expecting T_STRING from 1:12 to 1:17
+Syntax error, unexpected T_STATIC, expecting T_STRING from 1:13 to 1:18
 -----
 <?php class A extends self {}
 -----
-Cannot use 'self' as class name as it is reserved from 1:22 to 1:25
+Cannot use 'self' as class name as it is reserved from 1:23 to 1:26
 -----
 <?php class A extends parent {}
 -----
-Cannot use 'parent' as class name as it is reserved from 1:22 to 1:27
+Cannot use 'parent' as class name as it is reserved from 1:23 to 1:28
 -----
 <?php class A extends static {}
 -----
-Syntax error, unexpected T_STATIC, expecting T_STRING or T_NAMESPACE or T_NS_SEPARATOR from 1:22 to 1:27
+Syntax error, unexpected T_STATIC, expecting T_STRING or T_NAMESPACE or T_NS_SEPARATOR from 1:23 to 1:28
 -----
 <?php class A implements self {}
 -----
-Cannot use 'self' as interface name as it is reserved from 1:25 to 1:28
+Cannot use 'self' as interface name as it is reserved from 1:26 to 1:29
 -----
 <?php class A implements parent {}
 -----
-Cannot use 'parent' as interface name as it is reserved from 1:25 to 1:30
+Cannot use 'parent' as interface name as it is reserved from 1:26 to 1:31
 -----
 <?php class A implements static {}
 -----
-Syntax error, unexpected T_STATIC, expecting T_STRING or T_NAMESPACE or T_NS_SEPARATOR from 1:25 to 1:30
+Syntax error, unexpected T_STATIC, expecting T_STRING or T_NAMESPACE or T_NS_SEPARATOR from 1:26 to 1:31
 -----
 <?php interface self {}
 -----
@@ -46,16 +46,16 @@ Cannot use 'parent' as class name as it is reserved on line 1
 -----
 <?php interface static {}
 -----
-Syntax error, unexpected T_STATIC, expecting T_STRING from 1:16 to 1:21
+Syntax error, unexpected T_STATIC, expecting T_STRING from 1:17 to 1:22
 -----
 <?php interface A extends self {}
 -----
-Cannot use 'self' as interface name as it is reserved from 1:26 to 1:29
+Cannot use 'self' as interface name as it is reserved from 1:27 to 1:30
 -----
 <?php interface A extends parent {}
 -----
-Cannot use 'parent' as interface name as it is reserved from 1:26 to 1:31
+Cannot use 'parent' as interface name as it is reserved from 1:27 to 1:32
 -----
 <?php interface A extends static {}
 -----
-Syntax error, unexpected T_STATIC, expecting T_STRING or T_NAMESPACE or T_NS_SEPARATOR from 1:26 to 1:31
+Syntax error, unexpected T_STATIC, expecting T_STRING or T_NAMESPACE or T_NS_SEPARATOR from 1:27 to 1:32
diff --git a/test/code/parser/stmt/function/variadic.test-fail b/test/code/parser/stmt/function/variadic.test-fail
index 2f37799..a8a6001 100644
--- a/test/code/parser/stmt/function/variadic.test-fail
+++ b/test/code/parser/stmt/function/variadic.test-fail
@@ -3,4 +3,4 @@ Invalid variadic function
 <?php
 function foo(...$foo = []) {}
 -----
-Variadic parameter cannot have a default value from 2:23 to 2:24
+Variadic parameter cannot have a default value from 2:24 to 2:25
diff --git a/test/code/parser/stmt/haltCompilerOutermostScope.test-fail b/test/code/parser/stmt/haltCompilerOutermostScope.test-fail
index bb760f5..2f8a3f1 100644
--- a/test/code/parser/stmt/haltCompilerOutermostScope.test-fail
+++ b/test/code/parser/stmt/haltCompilerOutermostScope.test-fail
@@ -5,4 +5,4 @@ if (true) {
     __halt_compiler();
 }
 -----
-__HALT_COMPILER() can only be used from the outermost scope from 3:4 to 3:18
+__HALT_COMPILER() can only be used from the outermost scope from 3:5 to 3:19
diff --git a/test/code/parser/stmt/namespace/name.test-fail b/test/code/parser/stmt/namespace/name.test-fail
index 79b906d..71e1ad7 100644
--- a/test/code/parser/stmt/namespace/name.test-fail
+++ b/test/code/parser/stmt/namespace/name.test-fail
@@ -2,15 +2,15 @@ Invalid namespace names
 -----
 <?php namespace self;
 -----
-Cannot use 'self' as namespace name from 1:16 to 1:19
+Cannot use 'self' as namespace name from 1:17 to 1:20
 -----
 <?php namespace parent;
 -----
-Cannot use 'parent' as namespace name from 1:16 to 1:21
+Cannot use 'parent' as namespace name from 1:17 to 1:22
 -----
 <?php namespace static;
 -----
-Syntax error, unexpected T_STATIC, expecting T_STRING or T_NS_SEPARATOR or '{' from 1:16 to 1:21
+Syntax error, unexpected T_STATIC, expecting T_STRING or T_NS_SEPARATOR or '{' from 1:17 to 1:22
 -----
 <?php use A as self;
 -----
@@ -22,4 +22,4 @@ Cannot use B as parent because 'parent' is a special class name on line 1
 -----
 <?php use C as static;
 -----
-Syntax error, unexpected T_STATIC, expecting T_STRING from 1:15 to 1:20
+Syntax error, unexpected T_STATIC, expecting T_STRING from 1:16 to 1:21
diff --git a/test/code/parser/stmt/namespace/nested.test-fail b/test/code/parser/stmt/namespace/nested.test-fail
index 9fc79c1..69576a5 100644
--- a/test/code/parser/stmt/namespace/nested.test-fail
+++ b/test/code/parser/stmt/namespace/nested.test-fail
@@ -7,4 +7,4 @@ namespace A {
     }
 }
 -----
-Namespace declarations cannot be nested from 3:4 to 5:4
+Namespace declarations cannot be nested from 3:5 to 5:5