diff --git a/src/graphics/irr_driver.cpp b/src/graphics/irr_driver.cpp
index 3c931f4bd..91b5103e4 100644
--- a/src/graphics/irr_driver.cpp
+++ b/src/graphics/irr_driver.cpp
@@ -499,6 +499,7 @@ void IrrDriver::initDevice()
     m_glsl = (m_gl_major_version > 3 || (m_gl_major_version == 3 && m_gl_minor_version >= 1));
 #endif
     initGL();
+    m_sync = 0;
 
     // Parse extensions
     hasVSLayer = false;
diff --git a/src/graphics/irr_driver.hpp b/src/graphics/irr_driver.hpp
index 66f2c0313..2b4f121fd 100644
--- a/src/graphics/irr_driver.hpp
+++ b/src/graphics/irr_driver.hpp
@@ -208,7 +208,7 @@ private:
     bool m_need_ubo_workaround;
     bool m_need_rh_workaround;
     bool m_need_srgb_workaround;
-    GLsync m_sync = 0;
+    GLsync m_sync;
     /** The irrlicht device. */
     IrrlichtDevice             *m_device;
     /** Irrlicht scene manager. */