diff --git a/Source/exehead/exec.c b/Source/exehead/exec.c
index aaf9da70..653cecdd 100644
--- a/Source/exehead/exec.c
+++ b/Source/exehead/exec.c
@@ -1168,7 +1168,7 @@ static int NSISCALL ExecuteEntry(entry *entry_)
         int rootkey=parm0;
         char *buf3=process_string_fromparm_tobuf(0x31);
         exec_errorflag++;
-        if (parm3)
+        if (!parm3)
         {
           HKEY hKey;
           if (RegOpenKeyEx((HKEY)rootkey,buf3,0,KEY_ALL_ACCESS,&hKey) == ERROR_SUCCESS)
diff --git a/Source/script.cpp b/Source/script.cpp
index 3b394272..dcd446d7 100644
--- a/Source/script.cpp
+++ b/Source/script.cpp
@@ -3309,6 +3309,7 @@ int CEXEBuild::doCommand(int which_token, LineParser &line, FILE *fp, const char
     case TOK_DELETEREGKEY:
       {
         int a=1;
+        ent.offsets[3]=0;
         if (which_token==TOK_DELETEREGKEY)
         {
           ent.offsets[3]=1;