diff --git a/OvmfPkg/Bhyve/BhyveX64.dsc b/OvmfPkg/Bhyve/BhyveX64.dsc
index 8f0cd93a2d..bb90c89c2d 100644
--- a/OvmfPkg/Bhyve/BhyveX64.dsc
+++ b/OvmfPkg/Bhyve/BhyveX64.dsc
@@ -666,6 +666,7 @@
   MdeModulePkg/Universal/BdsDxe/BdsDxe.inf {
     <LibraryClasses>
 !ifdef $(CSM_ENABLE)
+!error "CSM is being torn down"
       NULL|OvmfPkg/Bhyve/Csm/CsmSupportLib/CsmSupportLib.inf
       NULL|OvmfPkg/Csm/LegacyBootManagerLib/LegacyBootManagerLib.inf
 !endif
diff --git a/OvmfPkg/IntelTdx/IntelTdxX64.dsc b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
index 0ed36daf7c..273f3b1d5b 100644
--- a/OvmfPkg/IntelTdx/IntelTdxX64.dsc
+++ b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
@@ -377,6 +377,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdConOutUgaSupport|FALSE
   gEfiMdeModulePkgTokenSpaceGuid.PcdInstallAcpiSdtProtocol|TRUE
 !ifdef $(CSM_ENABLE)
+!error "CSM is being torn down"
   gUefiOvmfPkgTokenSpaceGuid.PcdCsmEnable|TRUE
 !endif
 !if $(SECURE_BOOT_ENABLE) == TRUE
diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index bce2aedcd7..ca32da995a 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -472,6 +472,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdConOutUgaSupport|FALSE
   gEfiMdeModulePkgTokenSpaceGuid.PcdInstallAcpiSdtProtocol|TRUE
 !ifdef $(CSM_ENABLE)
+!error "CSM is being torn down"
   gUefiOvmfPkgTokenSpaceGuid.PcdCsmEnable|TRUE
 !endif
 !if $(SMM_REQUIRE) == TRUE
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index 631e909a54..b0e8e0bfdf 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -479,6 +479,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdConOutUgaSupport|FALSE
   gEfiMdeModulePkgTokenSpaceGuid.PcdInstallAcpiSdtProtocol|TRUE
 !ifdef $(CSM_ENABLE)
+!error "CSM is being torn down"
   gUefiOvmfPkgTokenSpaceGuid.PcdCsmEnable|TRUE
 !endif
 !if $(SMM_REQUIRE) == TRUE
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc
index 4ea3008cc6..23a3bcdc46 100644
--- a/OvmfPkg/OvmfPkgX64.dsc
+++ b/OvmfPkg/OvmfPkgX64.dsc
@@ -498,6 +498,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdConOutUgaSupport|FALSE
   gEfiMdeModulePkgTokenSpaceGuid.PcdInstallAcpiSdtProtocol|TRUE
 !ifdef $(CSM_ENABLE)
+!error "CSM is being torn down"
   gUefiOvmfPkgTokenSpaceGuid.PcdCsmEnable|TRUE
 !endif
 !if $(SMM_REQUIRE) == TRUE
diff --git a/OvmfPkg/OvmfXen.dsc b/OvmfPkg/OvmfXen.dsc
index ddaa441cab..2346a63aaf 100644
--- a/OvmfPkg/OvmfXen.dsc
+++ b/OvmfPkg/OvmfXen.dsc
@@ -364,6 +364,7 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdConOutUgaSupport|FALSE
   gEfiMdeModulePkgTokenSpaceGuid.PcdInstallAcpiSdtProtocol|TRUE
 !ifdef $(CSM_ENABLE)
+!error "CSM is being torn down"
   gUefiOvmfPkgTokenSpaceGuid.PcdCsmEnable|TRUE
 !endif