diff --git a/stepmania/src/RageDisplay_OGL.cpp b/stepmania/src/RageDisplay_OGL.cpp
index 88ba5e57e0..79225c5e23 100644
--- a/stepmania/src/RageDisplay_OGL.cpp
+++ b/stepmania/src/RageDisplay_OGL.cpp
@@ -1645,8 +1645,8 @@ void RageDisplay_OGL::SetBlendMode( BlendMode mode )
 	DEFAULT_FAIL( mode );
 	}
 
-	if( GLExt.glBlendFuncSeparate != NULL )
-		GLExt.glBlendFuncSeparate( iSourceRGB, iDestRGB, iSourceAlpha, iDestAlpha );
+	if( GLExt.glBlendFuncSeparateEXT != NULL )
+		GLExt.glBlendFuncSeparateEXT( iSourceRGB, iDestRGB, iSourceAlpha, iDestAlpha );
 	else
 		glBlendFunc( iSourceRGB, iDestRGB );
 }
diff --git a/stepmania/src/RageDisplay_OGL_Helpers.cpp b/stepmania/src/RageDisplay_OGL_Helpers.cpp
index 3aac564c70..9757f18f59 100644
--- a/stepmania/src/RageDisplay_OGL_Helpers.cpp
+++ b/stepmania/src/RageDisplay_OGL_Helpers.cpp
@@ -130,7 +130,7 @@ void GLExt_t::Load( LowLevelWindow *pWind )
 	}
 
 	if( HasExtension("GL_EXT_blend_func_separate") )
-		glBlendFuncSeparate = (PFNGLBLENDFUNCSEPARATEPROC) pWind->GetProcAddress("glBlendFuncSeparate");
+		glBlendFuncSeparateEXT = (PFNGLBLENDFUNCSEPARATEEXTPROC) pWind->GetProcAddress("glBlendFuncSeparateEXT");
 
 	if( HasExtension("GL_EXT_blend_subtract") )
 		glBlendEquation = (PFNGLBLENDEQUATIONPROC) pWind->GetProcAddress("glBlendEquation");
diff --git a/stepmania/src/RageDisplay_OGL_Helpers.h b/stepmania/src/RageDisplay_OGL_Helpers.h
index 2deedc5c6d..803d91b5db 100644
--- a/stepmania/src/RageDisplay_OGL_Helpers.h
+++ b/stepmania/src/RageDisplay_OGL_Helpers.h
@@ -69,7 +69,7 @@ struct GLExt_t
 
 	PWSWAPINTERVALEXTPROC wglSwapIntervalEXT;
 	PFNGLCOLORTABLEPROC glColorTableEXT;
-	PFNGLBLENDFUNCSEPARATEPROC glBlendFuncSeparate;
+	PFNGLBLENDFUNCSEPARATEEXTPROC glBlendFuncSeparateEXT;
 	PFNGLBLENDEQUATIONPROC glBlendEquation;
 	PFNGLCOLORTABLEPARAMETERIVPROC glGetColorTableParameterivEXT;
 	PFNGLACTIVETEXTUREARBPROC glActiveTextureARB;