diff --git a/Utilities/ocvalidate/README.md b/Utilities/ocvalidate/README.md
index 4dae61cf784355f491369f2b18ba85007b8fb315..f524bf102f841f7aed2b29286a2c9768d0cc79f1 100644
--- a/Utilities/ocvalidate/README.md
+++ b/Utilities/ocvalidate/README.md
@@ -64,7 +64,7 @@ Utility to validate whether a `config.plist` matches requirements and convention
 ### Misc
 #### Boot
 - HibernateMode: Only `None`, `Auto`, `RTC`, or `NVRAM` are accepted.
-- PickerMode: Only `Builtin`, `External`, or `Apple` are accepted.
+- PickerMode: Only `Builtin`, `External`, or `Apple` are accepted. When set to `External`, `OpenCanopy.efi` should be loaded in `UEFI->Drivers`.
 - `PickerAudioAssist` requires `AudioSupport` in `UEFI->Audio` to be enabled.
 #### Security
 - AuthRestart: If enabled, `VirtualSMC.kext` should be present in `Kernel->Add`.
@@ -95,6 +95,7 @@ Utility to validate whether a `config.plist` matches requirements and convention
 - When `Ps2KeyboardDxe.efi` is in use, `KeySupport` in `UEFI->Input` should always be enabled altogether.
 - `OpenUsbKbDxe.efi` and `Ps2KeyboardDxe.efi` should never co-exist.
 - When HFS+ filesystem driver or `AudioDxe.efi` is in use, `ConnectDrivers` should be enabled altogether.
+- When `OpenCanopy.efi` is in use, `PickerMode` in `Misc->Boot` should be set to `External`.
 #### Input
 - KeySupportMode: Only `Auto`, `V1`, `V2`, or `AMI` are accepted.
 - When `PointerSupport` is enabled, the value of `PointerSupportMode` should only be `ASUS`.
diff --git a/Utilities/ocvalidate/ValidateMisc.c b/Utilities/ocvalidate/ValidateMisc.c
index b907a229aed1c9b84fcdc799c95d98a6cb6e2466..4903400117d6aa5d894a99235614881f55b35550 100644
--- a/Utilities/ocvalidate/ValidateMisc.c
+++ b/Utilities/ocvalidate/ValidateMisc.c
@@ -152,6 +152,9 @@ CheckMiscBoot (
   UINT32            ConsoleAttributes;
   CONST CHAR8       *HibernateMode;
   UINT32            PickerAttributes;
+  UINT32            Index;
+  CONST CHAR8       *Driver;
+  BOOLEAN           HasOpenCanopyEfiDriver;
   CONST CHAR8       *PickerMode;
   CONST CHAR8       *PickerVariant;
   BOOLEAN           IsPickerAudioAssistEnabled;
@@ -182,15 +185,23 @@ CheckMiscBoot (
     ++ErrorCount;
   }
 
-  //
-  // FIXME: Is OpenCanopy.efi mandatory if set to External? Or is this just a suggestion?
-  //
+  HasOpenCanopyEfiDriver = FALSE;
+  for (Index = 0; Index < UserUefi->Drivers.Count; ++Index) {
+    Driver = OC_BLOB_GET (UserUefi->Drivers.Values[Index]);
+
+    if (AsciiStrCmp (Driver, "OpenCanopy.efi") == 0) {
+      HasOpenCanopyEfiDriver = TRUE;
+    }
+  }
   PickerMode        = OC_BLOB_GET (&UserMisc->Boot.PickerMode);
   if (AsciiStrCmp (PickerMode, "Builtin") != 0
     && AsciiStrCmp (PickerMode, "External") != 0
     && AsciiStrCmp (PickerMode, "Apple") != 0) {
     DEBUG ((DEBUG_WARN, "Misc->Boot->PickerMode is borked (Can only be Builtin, External, or Apple)!\n"));
     ++ErrorCount;
+  } else if (AsciiStrCmp (PickerMode, "External") == 0 && !HasOpenCanopyEfiDriver) {
+    DEBUG ((DEBUG_WARN, "Misc->Boot->PickerMode is set to External, but OpenCanopy is not loaded at UEFI->Drivers!\n"));
+    ++ErrorCount;
   }
 
   PickerVariant     = OC_BLOB_GET (&UserMisc->Boot.PickerVariant);
diff --git a/Utilities/ocvalidate/ValidateUEFI.c b/Utilities/ocvalidate/ValidateUEFI.c
index 288e807bb57f78f4d9a625c6a83cec20be45fd4e..71723a3dbf6ed5aec83386a332c62c10c92b200d 100644
--- a/Utilities/ocvalidate/ValidateUEFI.c
+++ b/Utilities/ocvalidate/ValidateUEFI.c
@@ -179,6 +179,7 @@ CheckUEFIDrivers (
 {
   UINT32                       ErrorCount;
   OC_UEFI_CONFIG               *UserUefi;
+  OC_MISC_CONFIG               *UserMisc;
   UINT32                       Index;
   CONST CHAR8                  *Driver;
   BOOLEAN                      HasOpenRuntimeEfiDriver;
@@ -190,12 +191,16 @@ CheckUEFIDrivers (
   UINT32                       IndexHfsEfiDriver;
   BOOLEAN                      HasAudioDxeEfiDriver;
   UINT32                       IndexAudioDxeEfiDriver;
+  BOOLEAN                      HasOpenCanopyEfiDriver;
+  UINT32                       IndexOpenCanopyEfiDriver;
+  CONST CHAR8                  *PickerMode;
   BOOLEAN                      IsRequestBootVarRoutingEnabled;
   BOOLEAN                      IsKeySupportEnabled;
   BOOLEAN                      IsConnectDriversEnabled;
 
   ErrorCount                   = 0;
   UserUefi                     = &Config->Uefi;
+  UserMisc                     = &Config->Misc;
 
   HasOpenRuntimeEfiDriver      = FALSE;
   HasOpenUsbKbDxeEfiDriver     = FALSE;
@@ -205,6 +210,9 @@ CheckUEFIDrivers (
   HasHfsEfiDriver              = FALSE;
   IndexHfsEfiDriver            = 0;
   HasAudioDxeEfiDriver         = FALSE;
+  IndexAudioDxeEfiDriver       = 0;
+  HasOpenCanopyEfiDriver       = FALSE;
+  IndexOpenCanopyEfiDriver     = 0;
   for (Index = 0; Index < UserUefi->Drivers.Count; ++Index) {
     Driver = OC_BLOB_GET (UserUefi->Drivers.Values[Index]);
 
@@ -240,6 +248,10 @@ CheckUEFIDrivers (
       HasAudioDxeEfiDriver   = TRUE;
       IndexAudioDxeEfiDriver = Index;
     }
+    if (AsciiStrCmp (Driver, "OpenCanopy.efi") == 0) {
+      HasOpenCanopyEfiDriver   = TRUE;
+      IndexOpenCanopyEfiDriver = Index;
+    }
   }
 
   //
@@ -295,6 +307,12 @@ CheckUEFIDrivers (
     }
   }
 
+  PickerMode = OC_BLOB_GET (&UserMisc->Boot.PickerMode);
+  if (HasOpenCanopyEfiDriver && AsciiStrCmp (PickerMode, "External") != 0) {
+    DEBUG ((DEBUG_WARN, "OpenCanopy.efi is loaded at UEFI->Drivers[%u], but Misc->Boot->PickerMode is not set to External!\n", IndexOpenCanopyEfiDriver));
+    ++ErrorCount;
+  }
+
   return ErrorCount;
 }