diff --git a/src/cc/oracles.cpp b/src/cc/oracles.cpp
index 135f822dc..17679bccd 100644
--- a/src/cc/oracles.cpp
+++ b/src/cc/oracles.cpp
@@ -108,7 +108,7 @@ uint8_t DecodeOraclesCreateOpRet(const CScript &scriptPubKey,std::string &name,s
     std::vector<uint8_t> vopret; uint8_t *script,e,f,funcid;
     GetOpReturnData(scriptPubKey,vopret);
     script = (uint8_t *)vopret.data();
-    if ( script[0] == EVAL_ORACLES )
+    if ( vopret.size() > 2 && script[0] == EVAL_ORACLES )
     {
         if ( script[1] == 'C' )
         {
@@ -133,7 +133,7 @@ uint8_t DecodeOraclesOpRet(const CScript &scriptPubKey,uint256 &oracletxid,CPubK
     std::vector<uint8_t> vopret; uint8_t *script,e,f;
     GetOpReturnData(scriptPubKey,vopret);
     script = (uint8_t *)vopret.data();
-    if ( vopret.size() > 1  && script[0] == EVAL_ORACLES )
+    if ( vopret.size() > 2 && script[0] == EVAL_ORACLES )
     {
         if (script[0] == EVAL_ORACLES && (script[1]== 'R' || script[1] == 'S') && E_UNMARSHAL(vopret,ss >> e; ss >> f; ss >> oracletxid; ss >> pk; ss >> num)!=0)
             return(f);
@@ -154,7 +154,7 @@ uint8_t DecodeOraclesData(const CScript &scriptPubKey,uint256 &oracletxid,uint25
     std::vector<uint8_t> vopret; uint8_t *script,e,f;
     GetOpReturnData(scriptPubKey,vopret);
     script = (uint8_t *)vopret.data();
-    if ( vopret.size() > 1 && E_UNMARSHAL(vopret,ss >> e; ss >> f; ss >> oracletxid; ss >> batontxid; ss >> pk; ss >> data) != 0 )
+    if ( vopret.size() > 2 && E_UNMARSHAL(vopret,ss >> e; ss >> f; ss >> oracletxid; ss >> batontxid; ss >> pk; ss >> data) != 0 )
     {
         if ( e == EVAL_ORACLES && f == 'D' )
             return(f);