diff --git a/mednafen/general.cpp b/mednafen/general.cpp
index 4df372e..7e884be 100644
--- a/mednafen/general.cpp
+++ b/mednafen/general.cpp
@@ -45,30 +45,6 @@ static bool IsAbsolutePath(const char *path)
    return(FALSE);
 }
 
-bool MDFN_IsFIROPSafe(const std::string &path)
-{
- // We could make this more OS-specific, but it shouldn't hurt to try to weed out usage of characters that are path
- // separators in one OS but not in another, and we'd also run more of a risk of missing a special path separator case
- // in some OS.
-
- if(!MDFN_GetSettingB("filesys.untrusted_fip_check"))
-  return(true);
-
- if(path.find('\0') != string::npos)
-  return(false);
-
- if(path.find(':') != string::npos)
-  return(false);
-
- if(path.find('\\') != string::npos)
-  return(false);
-
- if(path.find('/') != string::npos)
-  return(false);
-
- return(true);
-}
-
 void MDFN_GetFilePathComponents(const std::string &file_path, 
       std::string *dir_path_out, std::string *file_base_out, 
       std::string *file_ext_out)
diff --git a/mednafen/general.h b/mednafen/general.h
index bddb32e..e8e5ae7 100644
--- a/mednafen/general.h
+++ b/mednafen/general.h
@@ -7,9 +7,6 @@ extern uint32 MDFN_RoundUpPow2(uint32);
 
 void GetFileBase(const char *f);
 
-// File-inclusion for-read-only path, for PSF and CUE/TOC sheet usage.
-bool MDFN_IsFIROPSafe(const std::string &path);
-
 std::string MDFN_MakeFName(int type, int id1, const char *cd1);
 
 void MDFN_ltrim(std::string &string);
diff --git a/mednafen/settings.cpp b/mednafen/settings.cpp
index 5349482..6107e67 100644
--- a/mednafen/settings.cpp
+++ b/mednafen/settings.cpp
@@ -87,9 +87,6 @@ bool MDFN_GetSettingB(const char *name)
       return 0;
    if (!strcmp("pce_fast.adpcmlp", name))
       return 0;
-   /* FILESYS */
-   if (!strcmp("filesys.untrusted_fip_check", name))
-      return 0;
    fprintf(stderr, "unhandled setting B: %s\n", name);
    return 0;
 }