diff --git a/src/runtime-rs/crates/resource/src/cpu_mem/initial_size.rs b/src/runtime-rs/crates/resource/src/cpu_mem/initial_size.rs
index 98745d3657..4c35bc09f2 100644
--- a/src/runtime-rs/crates/resource/src/cpu_mem/initial_size.rs
+++ b/src/runtime-rs/crates/resource/src/cpu_mem/initial_size.rs
@@ -144,12 +144,14 @@ impl InitialSizeManager {
             info!(sl!(), "resource with vcpu {}", self.resource.vcpu);
             if config.runtime.static_sandbox_resource_mgmt {
                 hv.cpu_info.default_vcpus += self.resource.vcpu;
-                let new_vcpus_ceil = hv.cpu_info.default_vcpus.ceil() as u32;
-                if hv.cpu_info.default_maxvcpus < new_vcpus_ceil {
-                    hv.cpu_info.default_maxvcpus = new_vcpus_ceil;
-                }
             }
         }
+
+        if config.runtime.static_sandbox_resource_mgmt {
+            let new_vcpus_ceil = hv.cpu_info.default_vcpus.ceil() as u32;
+            hv.cpu_info.default_maxvcpus = new_vcpus_ceil;
+        }
+
         self.resource.orig_toml_default_mem = hv.memory_info.default_memory;
         if self.resource.mem_mb > 0 {
             info!(sl!(), "resource with memory {}", self.resource.mem_mb);
@@ -450,6 +452,23 @@ mod tests {
         assert_eq!(hv.cpu_info.default_maxvcpus, 4);
     }
 
+    #[test]
+    fn test_setup_config_static_reduces_maxvcpus_to_static_total() {
+        let mut config = make_config(1.0, 8, 256, 4096, true);
+        let mut mgr = InitialSizeManager {
+            resource: InitialSize {
+                vcpu: 1.2,
+                mem_mb: 0,
+                orig_toml_default_mem: 0,
+            },
+        };
+
+        mgr.setup_config(&mut config).unwrap();
+        let hv = config.hypervisor.get("qemu").unwrap();
+        assert_eq!(hv.cpu_info.default_vcpus, 2.2);
+        assert_eq!(hv.cpu_info.default_maxvcpus, 3);
+    }
+
     #[test]
     fn test_setup_config_clamps_maxmemory() {
         let mut config = make_config(1.0, 4, 256, 300, true);