diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
index 43cc08e3dfc..d0d2d94bcc2 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
@@ -501,6 +501,11 @@ public abstract class AbstractPhpCodegen extends DefaultCodegen implements Codeg
 
     @Override
     public String toModelName(String name) {
+
+        if (modelNameMapping.containsKey(name)) {
+            return modelNameMapping.get(name);
+        }
+        
         // memoization
         String origName = name;
         if (schemaKeyToModelNameCache.containsKey(origName)) {