diff --git a/util/antivirus/clamtk/files/guicheck_disable_by_default.patch b/util/antivirus/clamtk/files/guicheck_disable_by_default.patch
new file mode 100644
index 0000000000..bc168b0193
--- /dev/null
+++ b/util/antivirus/clamtk/files/guicheck_disable_by_default.patch
@@ -0,0 +1,13 @@
+diff --git a/lib/Prefs.pm b/lib/Prefs.pm
+index 95cf815..f69c446 100644
+--- a/lib/Prefs.pm
++++ b/lib/Prefs.pm
+@@ -198,7 +198,7 @@ sub custom_prefs {
+     for my $p ( qw{GUICheck TruncateLog DupeDB } ) {
+         # on by default
+         if ( !exists $pkg{ $p } ) {
+-            $pkg{ $p } = 1;
++            $pkg{ $p } = 0;
+         }
+     }
+ 
diff --git a/util/antivirus/clamtk/pspec.xml b/util/antivirus/clamtk/pspec.xml
index 3561ddc36f..ba044794e3 100644
--- a/util/antivirus/clamtk/pspec.xml
+++ b/util/antivirus/clamtk/pspec.xml
@@ -21,7 +21,7 @@
 			<!-- <Dependency></Dependency> -->
 		</BuildDependencies>
 		<Patches>
-			<!-- <Patch level='1'></Patch> -->
+			<Patch level='1'>guicheck_disable_by_default.patch</Patch>
 		</Patches>
 	</Source>