diff --git a/drape/glfunctions.cpp b/drape/glfunctions.cpp
index b325800fc2..b794140d3b 100644
--- a/drape/glfunctions.cpp
+++ b/drape/glfunctions.cpp
@@ -148,7 +148,7 @@ bool GLFunctions::glHasExtension(const string & name)
   return false;
 }
 
-int GLFunctions::glGenVertexArray()
+uint32_t GLFunctions::glGenVertexArray()
 {
   ASSERT(glGenVertexArraysFn != NULL, ());
   GLuint result = 0;
diff --git a/drape/glfunctions.hpp b/drape/glfunctions.hpp
index 9a940a6e8a..d7f3f49009 100644
--- a/drape/glfunctions.hpp
+++ b/drape/glfunctions.hpp
@@ -11,7 +11,7 @@ public:
   static bool glHasExtension(const string & name);
 
   /// VAO support
-  static int glGenVertexArray();
+  static uint32_t glGenVertexArray();
   static void glBindVertexArray(uint32_t vao);
   static void glDeleteVertexArray(uint32_t vao);