diff --git a/packages/prism.xml b/packages/prism.xml
index 64195bb6de9ac732d714910cb25453da234f95ac..7dd84bbc28e0d77483bf5dcdceec4d984a0965e9 100644
--- a/packages/prism.xml
+++ b/packages/prism.xml
@@ -2,8 +2,10 @@
 <packages:packages xmlns:packages="http://www.wpkg.org/packages">
   <package id="prism" name="GraphPad Prism" revision="%version%.1" priority="0" reboot="false">
 
+    <!-- installer fails registering PrismSearchPlugin64.dll when run inside docker -->
+    <variable name="GIT_CITEST" value="broken" />
+    <!-- Taken from searchreg.vbs DisplayName. N.B. different than DisplayVersion -->
     <variable name="version" value="10.4.1.627" />
-    <!--Taken from searchreg.vbs DisplayName. N.B. different than DisplayVersion-->	  
 
     <check type="uninstall" condition="exists" path="GraphPad Prism %version%" />