diff --git a/src/ov_utils.cpp b/src/ov_utils.cpp
index 92ac74a168..282e895aee 100644
--- a/src/ov_utils.cpp
+++ b/src/ov_utils.cpp
@@ -134,7 +134,8 @@ Status validatePluginConfiguration(const plugin_config_t& pluginConfig, const st
         insertSupportedKeys(pluginSupportedConfigKeys, targetDevice, ieCore);
     }
 
-    pluginSupportedConfigKeys.insert("ENABLE_MMAP");  // WA: always supported
+    pluginSupportedConfigKeys.insert("ENABLE_MMAP");                 // WA: always supported
+    pluginSupportedConfigKeys.insert("CPU_RUNTIME_CACHE_CAPACITY");  // WA: always supported
 
     for (auto& config : pluginConfig) {
         if (std::find(pluginSupportedConfigKeys.begin(), pluginSupportedConfigKeys.end(), config.first) == pluginSupportedConfigKeys.end()) {
diff --git a/src/test/ov_utils_test.cpp b/src/test/ov_utils_test.cpp
index 579426b99d..c5f80fabe2 100644
--- a/src/test/ov_utils_test.cpp
+++ b/src/test/ov_utils_test.cpp
@@ -240,3 +240,14 @@ TEST(OVUtils, ValidatePluginConfigurationAllowEnableMmap) {
     auto model = ieCore.read_model(std::filesystem::current_path().u8string() + "/src/test/dummy/1/dummy.xml", {}, pluginConfig);
     auto compiledModel = ieCore.compile_model(model, "CPU", pluginConfig);
 }
+
+TEST(OVUtils, ValidatePluginConfigurationAllowCPURuntimeCacheCapacity) {
+    ov::Core ieCore;
+    ovms::ModelConfig config;
+    config.setTargetDevice("CPU");
+    config.setPluginConfig({{"CPU_RUNTIME_CACHE_CAPACITY", "0"}});
+    ovms::plugin_config_t pluginConfig = ovms::ModelInstance::prepareDefaultPluginConfig(config);
+    auto status = ovms::validatePluginConfiguration(pluginConfig, "CPU", ieCore);
+    EXPECT_TRUE(status.ok());
+    auto model = ieCore.read_model(std::filesystem::current_path().u8string() + "/src/test/dummy/1/dummy.xml", {}, pluginConfig);
+    auto compiledModel = ieCore.compile_model(model, "CPU", pluginConfig);