diff --git a/reference/imagick/imagick/adaptiveresizeimage.xml b/reference/imagick/imagick/adaptiveresizeimage.xml
index e5c53733679b..b3f4484c7f5e 100644
--- a/reference/imagick/imagick/adaptiveresizeimage.xml
+++ b/reference/imagick/imagick/adaptiveresizeimage.xml
@@ -49,7 +49,19 @@
      <term><parameter>bestfit</parameter></term>
      <listitem>
       <para>
-       Whether to fit the image inside a bounding box.
+       Whether to fit the image within the given dimensions while preserving
+       the aspect ratio.
+      </para>
+     </listitem>
+    </varlistentry>
+    <varlistentry>
+     <term><parameter>legacy</parameter></term>
+     <listitem>
+      <para>
+       Optional <type>bool</type> parameter.
+       If set to true, the calculations are done with the small rounding bug
+       that existed in Imagick before 3.4.0. If set to false, the calculations
+       should produce the same results as the ImageMagick command-line tools.
       </para>
      </listitem>
     </varlistentry>
@@ -94,6 +106,12 @@
        Pass zero as either parameter for proportional scaling.  
        </entry>
       </row>
+      <row>
+       <entry>PECL imagick 3.4.0</entry>
+       <entry>
+        Added the <parameter>legacy</parameter> parameter.
+       </entry>
+      </row>
      </tbody>
     </tgroup>
    </informaltable>
diff --git a/reference/imagick/imagick/cropthumbnailimage.xml b/reference/imagick/imagick/cropthumbnailimage.xml
index 1e2cef4fd822..ed54a6fb1462 100644
--- a/reference/imagick/imagick/cropthumbnailimage.xml
+++ b/reference/imagick/imagick/cropthumbnailimage.xml
@@ -40,6 +40,17 @@
       </para>
      </listitem>
     </varlistentry>
+    <varlistentry>
+     <term><parameter>legacy</parameter></term>
+     <listitem>
+      <para>
+       Optional <type>bool</type> parameter.
+       If set to true, the calculations are done with the small rounding bug
+       that existed in Imagick before 3.4.0. If set to false, the calculations
+       should produce the same results as the ImageMagick command-line tools.
+      </para>
+     </listitem>
+    </varlistentry>
    </variablelist>
   </para>
 
@@ -57,6 +68,29 @@
    &imagick.imagick.throws;
   </para>
  </refsect1>
+ <refsect1 role="changelog">
+  &reftitle.changelog;
+  <para>
+   <informaltable>
+    <tgroup cols="2">
+     <thead>
+      <row>
+       <entry>&Version;</entry>
+       <entry>&Description;</entry>
+      </row>
+     </thead>
+     <tbody>
+      <row>
+       <entry>PECL imagick 3.4.0</entry>
+       <entry>
+        Added the <parameter>legacy</parameter> parameter.
+       </entry>
+      </row>
+     </tbody>
+    </tgroup>
+   </informaltable>
+  </para>
+ </refsect1>
 
 </refentry>
 
diff --git a/reference/imagick/imagick/resizeimage.xml b/reference/imagick/imagick/resizeimage.xml
index 5e45f8958b09..8c6672374529 100644
--- a/reference/imagick/imagick/resizeimage.xml
+++ b/reference/imagick/imagick/resizeimage.xml
@@ -64,7 +64,21 @@
      <term><parameter>bestfit</parameter></term>
      <listitem>
       <para>
-       Optional fit parameter.
+       Optional <type>bool</type> parameter.
+       If set to true, the image is resized to fit within the given dimensions
+       while preserving the aspect ratio.
+      </para>
+     </listitem>
+    </varlistentry>
+
+    <varlistentry>
+    <term><parameter>legacy</parameter></term>
+     <listitem>
+      <para>
+       Optional <type>bool</type> parameter.
+       If set to true, the calculations are done with the small rounding bug that existed in
+       Imagick before 3.4.0. If set to false, the calculations should produce the same results
+       as the ImageMagick command-line tools.
       </para>
      </listitem>
     </varlistentry>
@@ -98,6 +112,12 @@
        Pass zero as either parameter for proportional scaling.  
        </entry>
       </row>
+      <row>
+       <entry>PECL imagick 3.4.0</entry>
+       <entry>
+        Added the <parameter>legacy</parameter> parameter.
+       </entry>
+      </row>
      </tbody>
     </tgroup>
    </informaltable>
diff --git a/reference/imagick/imagick/scaleimage.xml b/reference/imagick/imagick/scaleimage.xml
index c2cc77b118af..a63aa1c486b5 100644
--- a/reference/imagick/imagick/scaleimage.xml
+++ b/reference/imagick/imagick/scaleimage.xml
@@ -30,6 +30,7 @@
      <term><parameter>columns</parameter></term>
      <listitem>
       <para>
+       The number of columns in the scaled image.
       </para>
      </listitem>
     </varlistentry>
@@ -37,6 +38,7 @@
      <term><parameter>rows</parameter></term>
      <listitem>
       <para>
+       The number of rows in the scaled image.
       </para>
      </listitem>
     </varlistentry>
@@ -44,6 +46,19 @@
      <term><parameter>bestfit</parameter></term>
      <listitem>
       <para>
+       Whether to fit the image within the given dimensions while preserving
+       the aspect ratio.
+      </para>
+     </listitem>
+    </varlistentry>
+    <varlistentry>
+     <term><parameter>legacy</parameter></term>
+     <listitem>
+      <para>
+       Optional <type>bool</type> parameter.
+       If set to true, the calculations are done with the small rounding bug
+       that existed in Imagick before 3.4.0. If set to false, the calculations
+       should produce the same results as the ImageMagick command-line tools.
       </para>
      </listitem>
     </varlistentry>
@@ -84,6 +99,12 @@
        Pass zero as either parameter for proportional scaling.  
        </entry>
       </row>
+      <row>
+       <entry>PECL imagick 3.4.0</entry>
+       <entry>
+        Added the <parameter>legacy</parameter> parameter.
+       </entry>
+      </row>
      </tbody>
     </tgroup>
    </informaltable>