diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/InlineModelResolver.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/InlineModelResolver.java
index 9e1c96367b0..172c26eb0bb 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/InlineModelResolver.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/InlineModelResolver.java
@@ -316,7 +316,7 @@ public class InlineModelResolver {
                 if (schema.getAdditionalProperties() instanceof Schema) {
                     Schema inner = (Schema) schema.getAdditionalProperties();
                     if (inner != null) {
-                        String schemaName = resolveModelName(schema.getTitle(), modelPrefix + this.inlineSchemaOptions.get("MAP_ITEM_SUFFIX"));
+                        String schemaName = resolveModelName(inner.getTitle(), modelPrefix + this.inlineSchemaOptions.get("MAP_ITEM_SUFFIX"));
                         // Recurse to create $refs for inner models
                         gatherInlineModels(inner, schemaName);
                         if (isModelNeeded(inner)) {
@@ -1015,4 +1015,4 @@ public class InlineModelResolver {
 
         return name;
     }
-}
\ No newline at end of file
+}