1 files changed, 2 insertions, 0 deletions
diff --git a/rts/PrimOps.cmm b/rts/PrimOps.cmm
index 7f7565cfd9..6ce206f139 100644
--- a/rts/PrimOps.cmm
+++ b/rts/PrimOps.cmm
@@ -1836,6 +1836,7 @@ loop:
             // Resolve #18919.
             ccall dirty_MVAR(BaseReg "ptr", mvar "ptr",
                              StgMVar_value(mvar) "ptr");
+            info = stg_MVAR_DIRTY_info;
         }
     }
 
@@ -1926,6 +1927,7 @@ loop:
             // Resolve #18919.
             ccall dirty_MVAR(BaseReg "ptr", mvar "ptr",
                              StgMVar_value(mvar) "ptr");
+            info = stg_MVAR_DIRTY_info;
         }
     }