--- a/src/process_pipeline.c
+++ b/src/process_pipeline.c
@@ -179,10 +179,10 @@ mp_process_find_all_processors(GtkListStore *store)
                         store, &iter, 0, buffer, 1, "(built-in) postprocess.sh", -1);
         }
 
-        // Find extra packaged postprocessor scripts
-        // These should be packaged in
-        // /usr/share/megapixels/postprocessor.d/executable
-        sprintf(buffer, "%s/megapixels/postprocessor.d", DATADIR);
+        // Find extra system postprocessor scripts
+        // These should be accessible in
+        // /run/current-system/sw/share/megapixels/postprocessor.d/executable
+        sprintf(buffer, "/run/current-system/sw/share/megapixels/postprocessor.d");
         DIR *d;
         struct dirent *dir;
         d = opendir(buffer);
@@ -192,8 +192,7 @@ mp_process_find_all_processors(GtkListStore *store)
                                 continue;
                         }
                         sprintf(buffer,
-                                "%s/megapixels/postprocessor.d/%s",
-                                DATADIR,
+                                "/run/current-system/sw/share/megapixels/postprocessor.d/%s",
                                 dir->d_name);
                         gtk_list_store_insert(store, &iter, -1);
                         gtk_list_store_set(