diff --git a/proxmoxtf/resource/vm/validators.go b/proxmoxtf/resource/vm/validators.go
index 9bf6940c..f1a5905b 100644
--- a/proxmoxtf/resource/vm/validators.go
+++ b/proxmoxtf/resource/vm/validators.go
@@ -55,6 +55,7 @@ func BIOSValidator() schema.SchemaValidateDiagFunc {
 // CPUArchitectureValidator returns a schema validation function for a CPU architecture.
 func CPUArchitectureValidator() schema.SchemaValidateDiagFunc {
 	return validation.ToDiagFunc(validation.StringInSlice([]string{
+		"",
 		"aarch64",
 		"x86_64",
 	}, false))
diff --git a/proxmoxtf/resource/vm/vm.go b/proxmoxtf/resource/vm/vm.go
index 9cf8b8ab..862eaa1b 100644
--- a/proxmoxtf/resource/vm/vm.go
+++ b/proxmoxtf/resource/vm/vm.go
@@ -58,7 +58,7 @@ const (
 	dvCloneNodeName       = ""
 	dvCloneFull           = true
 	dvCloneRetries        = 1
-	dvCPUArchitecture     = "x86_64"
+	dvCPUArchitecture     = ""
 	dvCPUCores            = 1
 	dvCPUHotplugged       = 0
 	dvCPULimit            = 0
@@ -1890,8 +1890,7 @@ func vmCreateClone(ctx context.Context, d *schema.ResourceData, m interface{}) d
 		}
 
 		// Only the root account is allowed to change the CPU architecture, which makes this check necessary.
-		if client.API().IsRootTicket() ||
-			cpuArchitecture != dvCPUArchitecture {
+		if client.API().IsRootTicket() && cpuArchitecture != "" {
 			updateBody.CPUArchitecture = &cpuArchitecture
 		}
 
@@ -2574,8 +2573,7 @@ func vmCreateCustom(ctx context.Context, d *schema.ResourceData, m interface{})
 	}
 
 	// Only the root account is allowed to change the CPU architecture, which makes this check necessary.
-	if client.API().IsRootTicket() ||
-		cpuArchitecture != dvCPUArchitecture {
+	if client.API().IsRootTicket() && cpuArchitecture != "" {
 		createBody.CPUArchitecture = &cpuArchitecture
 	}
 
@@ -4845,8 +4843,7 @@ func vmUpdate(ctx context.Context, d *schema.ResourceData, m interface{}) diag.D
 		cpuAffinity := cpuBlock[mkCPUAffinity].(string)
 
 		// Only the root account is allowed to change the CPU architecture, which makes this check necessary.
-		if client.API().IsRootTicket() ||
-			cpuArchitecture != dvCPUArchitecture {
+		if client.API().IsRootTicket() && cpuArchitecture != "" {
 			updateBody.CPUArchitecture = &cpuArchitecture
 		}