diff --git a/pdf/plugin.jelly b/pdf/plugin.jelly
index 5d0780c9..64aa484a 100644
--- a/pdf/plugin.jelly
+++ b/pdf/plugin.jelly
@@ -174,12 +174,16 @@ plugin.currentVersion           = [${plugin.currentVersion}]
       <arg value="-PARAM"/>
       <arg value="coverDate"/>
       <arg value="${maven.pdf.cover.date}"/>
-      <arg value="-PARAM"/>
-      <arg value="companyLogo"/>
-      <arg value="${maven.pdf.companyLogo}"/>
-      <arg value="-PARAM"/>
-      <arg value="projectLogo"/>
-      <arg value="${maven.pdf.projectLogo}"/>
+      <j:if test="${not empty(maven.pdf.companyLogo)}">
+        <arg value="-PARAM"/>
+        <arg value="companyLogo"/>
+        <arg value="${maven.pdf.companyLogo}"/>
+      </j:if>
+      <j:if test="${not empty(maven.pdf.projectLogo)}">
+        <arg value="-PARAM"/>
+        <arg value="projectLogo"/>
+        <arg value="${maven.pdf.projectLogo}"/>
+      </j:if>
       <arg value="-PARAM"/>
       <arg value="imageDpi"/>
       <arg value="${maven.pdf.imageDpi}"/>
diff --git a/pdf/xdocs/changes.xml b/pdf/xdocs/changes.xml
index 61c20634..f618cb82 100644
--- a/pdf/xdocs/changes.xml
+++ b/pdf/xdocs/changes.xml
@@ -25,6 +25,7 @@
   </properties>
   <body>
     <release version="2.5-SNAPSHOT" date="in SVN">
+      <action dev="aheritier" type="fix" issue="MPPDF-47">An error occurs if the project logo or the company logo aren't defined.</action>
       <action dev="ltheussl" type="fix" issue="MPPDF-37">Page numbering not correct with more than 10 items in menu.</action>
       <action dev="ltheussl" type="add" issue="MPPDF-48">New goal <code>pdf:navigation-validate</code> to validate the pdf navigation file.</action>
       <action dev="ltheussl" type="fix" issue="MPPDF-50">Fix <code>maven.pdf.cover.projectCompany</code>.</action>
