diff --git a/src/posix/cocoa/gl_sysfb.h b/src/posix/cocoa/gl_sysfb.h
index 39c8f8ab4..fc957a641 100644
--- a/src/posix/cocoa/gl_sysfb.h
+++ b/src/posix/cocoa/gl_sysfb.h
@@ -83,8 +83,6 @@ protected:
 	void SetFullscreenMode();
 	void SetWindowedMode();
 
-	void InitializeState();
-
 	void SwapBuffers();
 
 	void SetGammaTable(uint16_t* table);
diff --git a/src/posix/cocoa/i_video.mm b/src/posix/cocoa/i_video.mm
index f50f1a4af..f4f03f2df 100644
--- a/src/posix/cocoa/i_video.mm
+++ b/src/posix/cocoa/i_video.mm
@@ -422,10 +422,6 @@ void SystemGLFrameBuffer::SetVSync(bool vsync)
 }
 
 
-void SystemGLFrameBuffer::InitializeState()
-{
-}
-
 void SystemGLFrameBuffer::SwapBuffers()
 {
 	[[NSOpenGLContext currentContext] flushBuffer];
diff --git a/src/posix/sdl/gl_sysfb.h b/src/posix/sdl/gl_sysfb.h
index 16f2171ce..6972dd449 100644
--- a/src/posix/sdl/gl_sysfb.h
+++ b/src/posix/sdl/gl_sysfb.h
@@ -32,7 +32,6 @@ public:
 protected:
 	void SetGammaTable(uint16_t *tbl);
 	void ResetGammaTable();
-	void InitializeState();
 
 	SystemGLFrameBuffer () {}
 	uint8_t GammaTable[3][256];
diff --git a/src/posix/sdl/sdlglvideo.cpp b/src/posix/sdl/sdlglvideo.cpp
index 42c7a7c20..34200520a 100644
--- a/src/posix/sdl/sdlglvideo.cpp
+++ b/src/posix/sdl/sdlglvideo.cpp
@@ -273,12 +273,6 @@ SystemGLFrameBuffer::~SystemGLFrameBuffer ()
 }
 
 
-
-
-void SystemGLFrameBuffer::InitializeState()
-{
-}
-
 void SystemGLFrameBuffer::SetGammaTable(uint16_t *tbl)
 {
 	if (m_supportsGamma)