diff --git a/generator/java/build.gradle b/generator/java/build.gradle
index 92ff895..d7cc60d 100644
--- a/generator/java/build.gradle
+++ b/generator/java/build.gradle
@@ -13,7 +13,7 @@ buildscript {
 
 apply plugin: 'org.openapi.generator'
 
-def clientOutputDir = "$rootDir/$rootProject.generatedClientsDirName/java".toString()
+def clientOutputDir = "$rootDir/$rootProject.generatedClientsDirName/java"
 def buildDir = "$projectDir/build";
 def resourcesDir = "$projectDir/resources".toString()
 def criteoPackage = project.properties["package.name.base"]
diff --git a/generator/php/build.gradle b/generator/php/build.gradle
index 606d77f..3c1d037 100644
--- a/generator/php/build.gradle
+++ b/generator/php/build.gradle
@@ -17,7 +17,7 @@ ext {
     jar.enabled = false
 }
 
-def clientOutputDir = "$rootDir/$rootProject.generatedClientsDirName/php".toString()
+def clientOutputDir = "$rootDir/$rootProject.generatedClientsDirName/php"
 def resourcesDir = "$projectDir/resources".toString()
 def criteoPackage = project.properties["package.name.base"]
 def generatorVersion = project.properties["generator.version"]
diff --git a/generator/python/build.gradle b/generator/python/build.gradle
index 74bb77d..c3bd074 100644
--- a/generator/python/build.gradle
+++ b/generator/python/build.gradle
@@ -18,7 +18,7 @@ ext {
     jar.enabled = false
 }
 
-def clientOutputDir = "$rootDir/$rootProject.generatedClientsDirName/python".toString()
+def clientOutputDir = "$rootDir/$rootProject.generatedClientsDirName/python"
 def resourcesDir = "$projectDir/resources".toString()
 def buildDir = "$projectDir/build"
 def criteoPackage = project.properties["package.name.base"]