diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index e0ff7ead03..e0779ddaa4 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -54,7 +54,7 @@
 !ifdef $(FD_SIZE_4MB)
   DEFINE FD_SIZE_IN_KB           = 4096
 !else
-  DEFINE FD_SIZE_IN_KB           = 4096
+  DEFINE FD_SIZE_IN_KB           = 2048
 !endif
 !endif
 !endif
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index 41922f581c..bbe26e2cf4 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -54,7 +54,7 @@
 !ifdef $(FD_SIZE_4MB)
   DEFINE FD_SIZE_IN_KB           = 4096
 !else
-  DEFINE FD_SIZE_IN_KB           = 4096
+  DEFINE FD_SIZE_IN_KB           = 2048
 !endif
 !endif
 !endif
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc
index 9ba033956c..ff795815f6 100644
--- a/OvmfPkg/OvmfPkgX64.dsc
+++ b/OvmfPkg/OvmfPkgX64.dsc
@@ -54,7 +54,7 @@
 !ifdef $(FD_SIZE_4MB)
   DEFINE FD_SIZE_IN_KB           = 4096
 !else
-  DEFINE FD_SIZE_IN_KB           = 4096
+  DEFINE FD_SIZE_IN_KB           = 2048
 !endif
 !endif
 !endif