diff --git a/arch/HPPA/HPPADisassembler.c b/arch/HPPA/HPPADisassembler.c
index 677b2cd60f..84ac3c166e 100644
--- a/arch/HPPA/HPPADisassembler.c
+++ b/arch/HPPA/HPPADisassembler.c
@@ -395,6 +395,7 @@ static bool decodeSysop(cs_struct *ud, MCInst *MI, uint32_t insn) {
     case 0x00:
         MCOperand_CreateImm0(MI, t);
         MCOperand_CreateImm0(MI, GET_FIELD(insn, 6, 18));
+        return true;
     case 0x20:
         if (ext5 != 0x00 && ext5 != 0x10) {
             return false;