diff --git a/src/WallpaperEngine/Application/CWallpaperApplication.cpp b/src/WallpaperEngine/Application/CWallpaperApplication.cpp
index 9f43f89..ade1f2c 100644
--- a/src/WallpaperEngine/Application/CWallpaperApplication.cpp
+++ b/src/WallpaperEngine/Application/CWallpaperApplication.cpp
@@ -246,8 +246,15 @@ void CWallpaperApplication::takeScreenshot (const std::filesystem::path& filenam
 
         // read the viewport data into the pixel buffer
         glPixelStorei (GL_PACK_ALIGNMENT, 1);
-        glReadnPixels (viewport->viewport.x, viewport->viewport.y, viewport->viewport.z, viewport->viewport.w, GL_RGB,
-                      GL_UNSIGNED_BYTE, bufferSize, buffer);
+        // 4.5 supports glReadnPixels, anything older doesn't...
+        if (GLEW_VERSION_4_5) {
+            glReadnPixels (viewport->viewport.x, viewport->viewport.y, viewport->viewport.z, viewport->viewport.w,
+                           GL_RGB, GL_UNSIGNED_BYTE, bufferSize, buffer);
+        } else {
+            // fallback to old version
+            glReadPixels (viewport->viewport.x, viewport->viewport.y, viewport->viewport.z, viewport->viewport.w,
+                          GL_RGB, GL_UNSIGNED_BYTE, buffer);
+        }
 
         GLenum error = glGetError();
 
diff --git a/src/WallpaperEngine/Render/Drivers/CGLFWOpenGLDriver.cpp b/src/WallpaperEngine/Render/Drivers/CGLFWOpenGLDriver.cpp
index 48fffb1..f5f2680 100644
--- a/src/WallpaperEngine/Render/Drivers/CGLFWOpenGLDriver.cpp
+++ b/src/WallpaperEngine/Render/Drivers/CGLFWOpenGLDriver.cpp
@@ -133,8 +133,14 @@ void CGLFWOpenGLDriver::dispatchEventQueue () {
 
     // read the full texture into the image
     if (this->m_output->haveImageBuffer ()) {
-        glReadnPixels (0, 0, this->m_output->getFullWidth (), this->m_output->getFullHeight (), GL_BGRA,
-                      GL_UNSIGNED_BYTE, this->m_output->getImageBufferSize(), this->m_output->getImageBuffer ());
+        // 4.5 supports glReadnPixels, anything older doesn't...
+        if (GLEW_VERSION_4_5) {
+            glReadnPixels (0, 0, this->m_output->getFullWidth (), this->m_output->getFullHeight (), GL_BGRA,
+                           GL_UNSIGNED_BYTE, this->m_output->getImageBufferSize (), this->m_output->getImageBuffer ());
+        } else {
+            // fallback to old version
+            glReadPixels (0, 0, this->m_output->getFullWidth (), this->m_output->getFullHeight (), GL_BGRA, GL_UNSIGNED_BYTE, this->m_output->getImageBuffer ());
+        }
 
         GLenum error = glGetError();