diff --git a/main/gui/source/init/splash_window.cpp b/main/gui/source/init/splash_window.cpp
index 1e8a3b975..562841096 100644
--- a/main/gui/source/init/splash_window.cpp
+++ b/main/gui/source/init/splash_window.cpp
@@ -346,6 +346,9 @@ namespace hex::init {
             std::exit(EXIT_FAILURE);
         }
 
+        // Force window to be fully opaque by default
+        glfwSetWindowOpacity(this->m_window, 1.0F);
+
         // Calculate native scale factor for hidpi displays
         {
             float xScale = 0, yScale = 0;
diff --git a/main/gui/source/window/window.cpp b/main/gui/source/window/window.cpp
index 16d2ad9a2..86efc7c32 100644
--- a/main/gui/source/window/window.cpp
+++ b/main/gui/source/window/window.cpp
@@ -845,6 +845,9 @@ namespace hex {
             std::abort();
         }
 
+        // Force window to be fully opaque by default
+        glfwSetWindowOpacity(this->m_window, 1.0F);
+
         glfwMakeContextCurrent(this->m_window);
         glfwSwapInterval(1);