diff --git a/src/util/00-mesa-defaults.conf b/src/util/00-mesa-defaults.conf
index cb9c07a4dd0..39712cef38b 100644
--- a/src/util/00-mesa-defaults.conf
+++ b/src/util/00-mesa-defaults.conf
@@ -1366,6 +1366,12 @@ TODO: document the other workarounds.
             <option name="r300_nohiz" value="true" />
             <option name="r300_nozmask" value="true" />
         </application>
+        <application name="Unigine Tropics" executable="Tropics">
+            <option name="r300_ffmath" value="true" />
+        </application>
+        <application name="Oilrush" executable="Oilrush_x86">
+            <option name="r300_ffmath" value="true" />
+        </application>
     </device>
     <device driver="r600">
         <application name="Tomb Raider 2013" executable="TombRaider">