diff --git a/ghc/compiler/nativeGen/StixPrim.lhs b/ghc/compiler/nativeGen/StixPrim.lhs
index 11b6cd684736384d95b02fce862f3821869576e7..c9323ec415951a47917f17da2390c2bc0823be65 100644
--- a/ghc/compiler/nativeGen/StixPrim.lhs
+++ b/ghc/compiler/nativeGen/StixPrim.lhs
@@ -352,7 +352,7 @@ amodeToStix (CCharLike (CLit (MachChar c)))
 amodeToStix (CCharLike x)
   = StIndex PtrRep charLike off
   where
-    off = StPrim IntMulOp [amodeToStix x, StInt (toInteger (fixedHdrSize+1))]
+    off = StPrim IntMulOp [amodeToStix x, StInt (toInteger charLikeSize)]
 
 amodeToStix (CIntLike (CLit (MachInt i _)))
   = StLitLbl ((<>) (ptext SLIT("INTLIKE_closure+")) (int off))