diff --git a/launchers/common/src/main/java/dev/langchain4j/ModelProvider.java b/launchers/common/src/main/java/dev/langchain4j/ModelProvider.java
deleted file mode 100644
index 9c3953657..000000000
--- a/launchers/common/src/main/java/dev/langchain4j/ModelProvider.java
+++ /dev/null
@@ -1,8 +0,0 @@
-package dev.langchain4j;
-
-enum ModelProvider {
-    OPEN_AI,
-    HUGGING_FACE,
-    LOCAL_AI,
-    IN_MEMORY
-}
\ No newline at end of file
diff --git a/launchers/standalone/src/main/resources/application-local.yaml b/launchers/standalone/src/main/resources/application-local.yaml
index 096bc7226..065895a83 100644
--- a/launchers/standalone/src/main/resources/application-local.yaml
+++ b/launchers/standalone/src/main/resources/application-local.yaml
@@ -53,9 +53,7 @@ langchain4j:
       temperature: 0.0
       timeout: PT60S
   #2.embedding-model
-  #2.1 in_memory
-  embedding-model:
-    provider: in_memory
+  #2.1 in_memory(default)
   #2.2 open_ai
 #  embedding-model:
 #    provider: open_ai
diff --git a/launchers/standalone/src/test/resources/application-local.yaml b/launchers/standalone/src/test/resources/application-local.yaml
index cc609d0d9..bd3c0ed9b 100644
--- a/launchers/standalone/src/test/resources/application-local.yaml
+++ b/launchers/standalone/src/test/resources/application-local.yaml
@@ -45,8 +45,6 @@ langchain4j:
       temperature: 0.0
       timeout: PT60S
   #2.embedding-model
-  embedding-model:
-    provider: in_memory
 #  embedding-model:
 #    hugging-face:
 #      access-token: hg_access_token