diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 0f228ee11ca42cc86fe5bd4c6ea08dab56040a6f..a2e067f68dee867762fb4657d4e8aaf5ec68e62c 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -1853,7 +1853,7 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
 				goto compute_done;
 			}
 
-			return -1;
+			goto unknown_opcode;
 #ifdef __powerpc64__
 		case 777:	/* modsd */
 			if (!cpu_has_feature(CPU_FTR_ARCH_300))