diff --git a/CHANGELOG.md b/CHANGELOG.md
index 05db78a..743bf59 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,15 @@ and [Keep a Changelog](http://keepachangelog.com/).
 * Added semi-linear merge recommendation to GOVERNANCE.md ([#130])
 * Added GitHub Action to enforce updates to CHANGELOG.md ([#131])
 
+_The following entry is a backwards incompatible API change
+and may require changes in applications that invoke these methods:_
+
+* Error return values for `WikiPage::getSection()` changed from `false` to `null` ([#129])
+
+#### Fixed
+
+* Fixed one error return value in `WikiPage::setText()` ([#129])
+
 #### Removed
 
 * Method `Wikimate::debugCurlConfig()`, deprecated since v0.10.0 ([#128])
@@ -170,5 +179,6 @@ and [Keep a Changelog](http://keepachangelog.com/).
 [#125]: https://github.com/hamstar/Wikimate/pull/125
 [#127]: https://github.com/hamstar/Wikimate/pull/127
 [#128]: https://github.com/hamstar/Wikimate/pull/128
+[#129]: https://github.com/hamstar/Wikimate/pull/129
 [#130]: https://github.com/hamstar/Wikimate/pull/130
 [#131]: https://github.com/hamstar/Wikimate/pull/131
diff --git a/Wikimate.php b/Wikimate.php
index 31b28bb..ee9ba3d 100644
--- a/Wikimate.php
+++ b/Wikimate.php
@@ -1145,20 +1145,20 @@ public function getText($refresh = false)
 	 *                                        true to include heading too
 	 * @param   boolean  $includeSubsections  False to get section text only,
 	 *                                        true to include subsections too
-	 * @return  string                        Wikitext of the section on the page,
-	 *                                        or false if section is undefined
+	 * @return  mixed                         Wikitext of the section on the page,
+	 *                                        or null if section is undefined
 	 */
 	public function getSection($section, $includeHeading = false, $includeSubsections = true)
 	{
 		// Check if we have a section name or index
 		if (is_int($section)) {
 			if (!isset($this->sections->byIndex[$section])) {
-				return false;
+				return null;
 			}
 			$coords = $this->sections->byIndex[$section];
 		} else if (is_string($section)) {
 			if (!isset($this->sections->byName[$section])) {
-				return false;
+				return null;
 			}
 			$coords = $this->sections->byName[$section];
 		}
@@ -1308,7 +1308,7 @@ public function setText($text, $section = null, $minor = false, $summary = null)
 			// Check for errors
 			if (isset($r['error'])) {
 				$this->error = $r['error']; // Set the error if there was one
-				return null;
+				return false;
 			} else {
 				$this->error = null; // Reset the error status
 			}