diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 4934c80..e88dc7f 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -305,7 +305,7 @@
 
 static void spr_read_ibat_h (DisasContext *ctx, int gprn, int sprn)
 {
-    tcg_gen_ld_tl(cpu_gpr[gprn], cpu_env, offsetof(CPUPPCState, IBAT[sprn & 1][(sprn - SPR_IBAT4U) / 2]));
+    tcg_gen_ld_tl(cpu_gpr[gprn], cpu_env, offsetof(CPUPPCState, IBAT[sprn & 1][((sprn - SPR_IBAT4U) / 2) + 4]));
 }
 
 static void spr_write_ibatu (DisasContext *ctx, int sprn, int gprn)