diff --git a/client/installer.nsis b/client/installer.nsis
index 5c87006ee..dc106186a 100644
--- a/client/installer.nsis
+++ b/client/installer.nsis
@@ -155,7 +155,7 @@ FunctionEnd
 Function UninstallPrevious
 
     ; Check for uninstaller.
-    ReadRegStr $R0 HKLM "${HKLM_REG_KEY}" "InstallDir"
+    ReadRegStr $R0 HKLM "${UNINSTALL_PATH}" "UninstallString"
 
     ${If} $R0 == ""
         Goto Done