diff --git a/src/modules/BootSupportCheck.rb b/src/modules/BootSupportCheck.rb
index 50ff95c47..b00c92179 100644
--- a/src/modules/BootSupportCheck.rb
+++ b/src/modules/BootSupportCheck.rb
@@ -205,6 +205,9 @@ def check_activate_partition
 
       # there is already activate flag
       disk = Yast::BootStorage.mbr_disk
+
+      # do not activate for ppc and GPT see bsc#983194
+      return true if Arch.ppc64 && disk.gpt?
       if disk.partition_table
         legacy_boot = disk.partition_table.partition_legacy_boot_flag_supported?