diff --git a/pkg/config/app.go b/pkg/config/app.go
index 25aa10c1..8f3fecd8 100644
--- a/pkg/config/app.go
+++ b/pkg/config/app.go
@@ -454,9 +454,12 @@ func ExposeAllEnv(compose *composetypes.Config, appEnv AppEnv) {
 		if service.Name == "app" {
 			logrus.Debug("Add the following environment to the app service config:")
 			for k, v := range appEnv {
-				value := v
-				service.Environment[k] = &value
-				logrus.Debugf("Key: %s Value: %s", k, value)
+				_, exists := service.Environment[k]
+				if !exists {
+					value := v
+					service.Environment[k] = &value
+					logrus.Debugf("Add Key: %s Value: %s", k, value)
+				}
 			}
 		}
 	}