diff --git a/rEFIt_UEFI/Platform/Settings.cpp b/rEFIt_UEFI/Platform/Settings.cpp
index 0df205fd5..5f7fce8f4 100644
--- a/rEFIt_UEFI/Platform/Settings.cpp
+++ b/rEFIt_UEFI/Platform/Settings.cpp
@@ -6584,6 +6584,9 @@ GetOSIconName (
   XStringW OSIconName;
   if (OSVersion == NULL) {
     OSIconName = L"mac"_XSW;
+  } else if (AsciiStrStr (OSVersion, "10.16") != 0) {
+    // Big Sur
+    OSIconName = L"bigsur,mac"_XSW;
   } else if (AsciiStrStr (OSVersion, "10.15") != 0) {
     // Catalina
     OSIconName = L"cata,mac"_XSW;
diff --git a/rEFIt_UEFI/Platform/kernel_patcher.cpp b/rEFIt_UEFI/Platform/kernel_patcher.cpp
index c02a38352..bbb0f2068 100644
--- a/rEFIt_UEFI/Platform/kernel_patcher.cpp
+++ b/rEFIt_UEFI/Platform/kernel_patcher.cpp
@@ -1126,7 +1126,7 @@ VOID LOADER_ENTRY::applyKernPatch(const UINT8 *find, UINTN size, const UINT8 *re
 //
 static inline BOOLEAN IsXCPMOSVersionCompat(UINT64 os_version)
 {
-  return (os_version >= AsciiOSVersionToUint64("10.8.5")) && (os_version < AsciiOSVersionToUint64("10.16")); 
+  return (os_version >= AsciiOSVersionToUint64("10.8.5")) && (os_version < AsciiOSVersionToUint64("10.17")); 
 }
 
 //
diff --git a/rEFIt_UEFI/refit/main.cpp b/rEFIt_UEFI/refit/main.cpp
index 9838b2a75..24047a806 100644
--- a/rEFIt_UEFI/refit/main.cpp
+++ b/rEFIt_UEFI/refit/main.cpp
@@ -708,7 +708,8 @@ VOID LOADER_ENTRY::StartLoader()
               strncmp(InstallerVersion, "10.12", 5) &&
               strncmp(InstallerVersion, "10.13", 5) &&
               strncmp(InstallerVersion, "10.14", 5) &&
-              strncmp(InstallerVersion, "10.15", 5)) {   
+              strncmp(InstallerVersion, "10.15", 5) &&
+              strncmp(InstallerVersion, "10.16", 5)) {   
             InstallerVersion = NULL; // flag known version was not found
           }
           if (InstallerVersion != NULL) { // known version was found in image