diff --git a/RenderingManager.cpp b/RenderingManager.cpp
index 9b5e607..8d0f1dd 100644
--- a/RenderingManager.cpp
+++ b/RenderingManager.cpp
@@ -64,6 +64,7 @@ Rendering::Rendering()
 {
     main_window_ = nullptr;
     request_screenshot_ = false;
+    dpi_scale_ = 1.f;
 }
 
 bool Rendering::Init()
@@ -128,6 +129,9 @@ bool Rendering::Init()
     glViewport(0, 0, main_window_attributes_.viewport.x, main_window_attributes_.viewport.y);
     main_window_attributes_.clear_color = glm::vec4(COLOR_BGROUND, 1.0);
 
+    // DPI scaling (retina)
+    dpi_scale_ = float(main_window_attributes_.viewport.y) / float(winset.h);
+
     // Gstreamer link to context
     g_setenv ("GST_GL_API", "opengl3", FALSE);
     gst_init (NULL, NULL);
diff --git a/RenderingManager.h b/RenderingManager.h
index bd342a8..4dfd178 100644
--- a/RenderingManager.h
+++ b/RenderingManager.h
@@ -24,6 +24,7 @@ class Rendering
     // GLFW integration in OS window management
     class GLFWwindow* main_window_;
     std::string glsl_version;
+    float dpi_scale_;
 
     // Private Constructor
     Rendering();
@@ -86,6 +87,7 @@ public:
 
     float MonitorWidth();
     float MonitorHeight();
+    inline float DPIScale() const { return dpi_scale_; }
 
 private:
 
diff --git a/UserInterfaceManager.cpp b/UserInterfaceManager.cpp
index 3c64907..a47776d 100644
--- a/UserInterfaceManager.cpp
+++ b/UserInterfaceManager.cpp
@@ -149,13 +149,12 @@ bool UserInterface::Init()
     // Setup Platform/Renderer bindings
     ImGui_ImplGlfw_InitForOpenGL(Rendering::manager().main_window_, true);
     ImGui_ImplOpenGL3_Init(Rendering::manager().glsl_version.c_str());
-    ImGui_ImplGlfw_NewFrame();
 
     // Setup Dear ImGui style
     ImGuiToolkit::SetAccentColor(static_cast<ImGuiToolkit::accent_color>(Settings::application.accent_color));
 
     // Load Fonts (using resource manager, NB: a temporary copy of the raw data is necessary)
-    float base_font_size =  (Rendering::manager().MonitorHeight() * ImGui::GetIO().DisplayFramebufferScale.y) / 100.f ;
+    float base_font_size =  (Rendering::manager().MonitorHeight() * Rendering::manager().DPIScale()) / 100.f ;
     ImGuiToolkit::SetFont(ImGuiToolkit::FONT_DEFAULT, "Roboto-Regular", int(base_font_size) );
     ImGuiToolkit::SetFont(ImGuiToolkit::FONT_BOLD, "Roboto-Bold", int(base_font_size) );
     ImGuiToolkit::SetFont(ImGuiToolkit::FONT_ITALIC, "Roboto-Italic", int(base_font_size) );
@@ -165,8 +164,8 @@ bool UserInterface::Init()
 
     // info
     Log::Info("Monitor (%.1f,%.1f)", Rendering::manager().MonitorWidth(), Rendering::manager().MonitorHeight());
-    Log::Info("DPI Scale (%.1f,%.1f)", ImGui::GetIO().DisplayFramebufferScale.x, ImGui::GetIO().DisplayFramebufferScale.y);
-    Log::Info("Font size %d", base_font_size);
+    Log::Info("DPI Scale %.1f", Rendering::manager().DPIScale());
+    Log::Info("Font size %.1f", base_font_size);
 
     // Style
     ImGuiStyle& style = ImGui::GetStyle();