diff --git a/target-ppc/op.c b/target-ppc/op.c
index 6ae7a523b5..8c8021e1a6 100644
--- a/target-ppc/op.c
+++ b/target-ppc/op.c
@@ -446,7 +446,7 @@ PPC_OP(b)
 
 PPC_OP(b_T1)
 {
-    regs->nip = T1;
+    regs->nip = T1 & ~3;
 }
 
 PPC_OP(btest)