diff --git a/code/ryzom/tools/client/ryzom_installer/src/operationdialog.cpp b/code/ryzom/tools/client/ryzom_installer/src/operationdialog.cpp
index 7ccaaa428..ff63cd660 100644
--- a/code/ryzom/tools/client/ryzom_installer/src/operationdialog.cpp
+++ b/code/ryzom/tools/client/ryzom_installer/src/operationdialog.cpp
@@ -71,7 +71,10 @@ COperationDialog::COperationDialog(QWidget *parent):QDialog(parent), m_aborting(
 	connect(this, SIGNAL(fail(QString)), SLOT(onProgressFail(QString)));
 	connect(this, SIGNAL(done()), SLOT(onDone()));
 
-	setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+	adjustSize();
+
+	// fix height
+	setFixedHeight(height());
 
 	raise();
 }
diff --git a/code/ryzom/tools/client/ryzom_installer/ui/operationdialog.ui b/code/ryzom/tools/client/ryzom_installer/ui/operationdialog.ui
index 62ae32ab4..aef79175a 100644
--- a/code/ryzom/tools/client/ryzom_installer/ui/operationdialog.ui
+++ b/code/ryzom/tools/client/ryzom_installer/ui/operationdialog.ui
@@ -9,12 +9,12 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>400</width>
+    <width>505</width>
     <height>106</height>
    </rect>
   </property>
   <property name="sizePolicy">
-   <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+   <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
     <horstretch>0</horstretch>
     <verstretch>0</verstretch>
    </sizepolicy>
@@ -25,12 +25,6 @@
     <height>106</height>
    </size>
   </property>
-  <property name="maximumSize">
-   <size>
-    <width>400</width>
-    <height>106</height>
-   </size>
-  </property>
   <property name="windowTitle">
    <string>Ryzom Installer</string>
   </property>