diff -U2 -r GPXSee-7.33.orig/gpxsee.pro GPXSee-7.33/gpxsee.pro
--- GPXSee-7.33.orig/gpxsee.pro	2020-10-08 03:57:53.000000000 +0700
+++ GPXSee-7.33/gpxsee.pro	2020-10-15 22:26:51.786533119 +0700
@@ -446,5 +446,5 @@
 
 unix:!macx {
-    isEmpty(PREFIX):PREFIX = /usr/local
+    PREFIX = /usr
     DEFINES += PREFIX=\\\"$$PREFIX\\\"