diff --git a/src/fastapi_app/.env.example b/src/fastapi_app/.env.example
index 8f0c6c9..2651cfd 100644
--- a/src/fastapi_app/.env.example
+++ b/src/fastapi_app/.env.example
@@ -1,8 +1,8 @@
-DB_HOST=db
-DB_PORT=5432
-DB_USER=user
-DB_PASSWORD=Qwe123
-DB_NAME=api_db
+POSTGRES_HOST=db
+POSTGRES_PORT=5432
+POSTGRES_USER=user
+POSTGRES_PASSWORD=Qwe123
+POSTGRES_NAME=api_db
 
 API_HOST=0.0.0.0
 API_PORT=8000
diff --git a/src/fastapi_app/docker-compose.dev.yml b/src/fastapi_app/docker-compose.dev.yml
index 005a3b4..e38d4e4 100644
--- a/src/fastapi_app/docker-compose.dev.yml
+++ b/src/fastapi_app/docker-compose.dev.yml
@@ -4,13 +4,13 @@ services:
   db:
     image: postgres:15.2
     environment:
-      POSTGRES_USER: ${DB_USER}
-      POSTGRES_PASSWORD: ${DB_PASSWORD}
-      POSTGRES_DB: ${DB_NAME}
+      POSTGRES_USER: ${POSTGRES_USER}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      POSTGRES_DB: ${POSTGRES_NAME}
     env_file:
       - .env
     ports:
-      - "${DB_PORT}:${DB_PORT}"
+      - "${POSTGRES_PORT}:${POSTGRES_PORT}"
     volumes:
       - postgres_data:/var/lib/postgresql/data/
     restart: always
diff --git a/src/fastapi_app/docker-compose.yml b/src/fastapi_app/docker-compose.yml
index 4883e59..08ef87e 100644
--- a/src/fastapi_app/docker-compose.yml
+++ b/src/fastapi_app/docker-compose.yml
@@ -4,9 +4,9 @@ services:
   db:
     image: postgres:15.2
     environment:
-      POSTGRES_USER: ${DB_USER}
-      POSTGRES_PASSWORD: ${DB_PASSWORD}
-      POSTGRES_DB: ${DB_NAME}
+      POSTGRES_USER: ${POSTGRES_USER}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      POSTGRES_DB: ${POSTGRES_NAME}
     env_file:
       - .env
     ports:
diff --git a/src/fastapi_app/lib/app/split_settings/postgres.py b/src/fastapi_app/lib/app/split_settings/postgres.py
index eaaec62..62452f6 100644
--- a/src/fastapi_app/lib/app/split_settings/postgres.py
+++ b/src/fastapi_app/lib/app/split_settings/postgres.py
@@ -7,7 +7,7 @@ import lib.app.split_settings.utils as app_split_settings_utils
 class PostgresSettings(pydantic_settings.BaseSettings):
     model_config = pydantic_settings.SettingsConfigDict(
         env_file=app_split_settings_utils.ENV_PATH,
-        env_prefix="DB_",
+        env_prefix="POSTGRES_",
         env_file_encoding="utf-8",
         extra="ignore",
     )
@@ -17,5 +17,5 @@ class PostgresSettings(pydantic_settings.BaseSettings):
     port: int = 5432
     user: str = "app"
     password: pydantic.SecretStr = pydantic.Field(
-        default=..., validation_alias=pydantic.AliasChoices("password", "db_password")
+        default=..., validation_alias=pydantic.AliasChoices("password", "postgres_password")
     )