diff --git a/reference/svm/svm.xml b/reference/svm/svm.xml
index 48c495e8f3..7ce4c5fca7 100644
--- a/reference/svm/svm.xml
+++ b/reference/svm/svm.xml
@@ -119,7 +119,7 @@
     <fieldsynopsis>
      <modifier>const</modifier>
      <type>int</type>
-     <varname linkend="svm.constants.opt-propability">SVM::OPT_PROPABILITY</varname>
+     <varname linkend="svm.constants.opt-probability">SVM::OPT_PROPABILITY</varname>
      <initializer>105</initializer>
     </fieldsynopsis>
     <fieldsynopsis>
@@ -315,7 +315,7 @@
       </listitem>
      </varlistentry>
      
-     <varlistentry xml:id="svm.constants.opt-propability">
+     <varlistentry xml:id="svm.constants.opt-probability">
       <term><constant>SVM::OPT_PROBABILITY</constant></term>
       <listitem>
        <para>