diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc
index d362668ba13..16ca45617b6 100644
--- a/gcc/config/rs6000/rs6000.cc
+++ b/gcc/config/rs6000/rs6000.cc
@@ -4369,10 +4369,6 @@ rs6000_option_override_internal (bool global_init_p)
   if (TARGET_POWER10 && (rs6000_isa_flags_explicit & OPTION_MASK_MMA) == 0)
     rs6000_isa_flags |= OPTION_MASK_MMA;
 
-  if (TARGET_POWER10
-      && (rs6000_isa_flags_explicit & OPTION_MASK_P10_FUSION) == 0)
-    rs6000_isa_flags |= OPTION_MASK_P10_FUSION;
-
   /* Turn off vector pair/mma options on non-power10 systems.  */
   else if (!TARGET_POWER10 && TARGET_MMA)
     {
@@ -4382,6 +4378,10 @@ rs6000_option_override_internal (bool global_init_p)
       rs6000_isa_flags &= ~OPTION_MASK_MMA;
     }
 
+  if (TARGET_POWER10
+      && (rs6000_isa_flags_explicit & OPTION_MASK_P10_FUSION) == 0)
+    rs6000_isa_flags |= OPTION_MASK_P10_FUSION;
+
   /* MMA requires SIMD support as ISA 3.1 claims and our implementation
      such as "*movoo" uses vector pair access which use VSX registers.
      So make MMA require VSX support here.  */