diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
index d83cdef420cf..81ac76f81516 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
@@ -1861,6 +1861,10 @@ public DefaultCodegen() {
 
         // Register common Mustache lambdas.
         registerMustacheLambdas();
+
+        // Initialize mustache braces placeholders for all generators
+        additionalProperties.putIfAbsent("openbrace", "{");
+        additionalProperties.putIfAbsent("closebrace", "}");
     }
 
     /**
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautAbstractCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautAbstractCodegen.java
index 0ff8db956a42..4dd8f65fe6d9 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautAbstractCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautAbstractCodegen.java
@@ -133,10 +133,6 @@ public JavaMicronautAbstractCodegen() {
                 ))
         );
 
-        // Set additional properties
-        additionalProperties.put("openbrace", "{");
-        additionalProperties.put("closebrace", "}");
-
         // Set client options that will be presented to user
         updateOption(INVOKER_PACKAGE, this.getInvokerPackage());
         updateOption(CodegenConstants.ARTIFACT_ID, this.getArtifactId());
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinSpringServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinSpringServerCodegen.java
index f3037ad16c85..03abc35de88d 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinSpringServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinSpringServerCodegen.java
@@ -63,9 +63,6 @@ public class KotlinSpringServerCodegen extends AbstractKotlinCodegen
                     "ApiResponse"
             ));
 
-    public static final String OPEN_BRACE = "{";
-    public static final String CLOSE_BRACE = "}";
-
     public static final String TITLE = "title";
     public static final String SERVER_PORT = "serverPort";
     public static final String CONFIG_PACKAGE = "configPackage";
@@ -222,9 +219,6 @@ public KotlinSpringServerCodegen() {
         // cliOptions default redefinition need to be updated
         updateOption(CodegenConstants.ARTIFACT_ID, this.artifactId);
 
-        additionalProperties.put("openbrace", OPEN_BRACE);
-        additionalProperties.put("closebrace", CLOSE_BRACE);
-
         // Use lists instead of arrays
         typeMapping.put("array", "kotlin.collections.List");
         typeMapping.put("list", "kotlin.collections.List");
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/SpringCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/SpringCodegen.java
index d64785a8027c..4fc64abeaf07 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/SpringCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/SpringCodegen.java
@@ -123,9 +123,6 @@ public enum RequestMappingMode {
         }
     }
 
-    public static final String OPEN_BRACE = "{";
-    public static final String CLOSE_BRACE = "}";
-
     @Setter protected String title = "OpenAPI Spring";
     @Getter @Setter
     protected String configPackage = "org.openapitools.configuration";
@@ -222,8 +219,6 @@ public SpringCodegen() {
 
         // spring uses the jackson lib
         jackson = true;
-        additionalProperties.put("openbrace", OPEN_BRACE);
-        additionalProperties.put("closebrace", CLOSE_BRACE);
 
         cliOptions.add(new CliOption(TITLE, "server title name or client service name").defaultValue(title));
         cliOptions.add(new CliOption(CONFIG_PACKAGE, "configuration package for generated code")