diff --git a/src/opengl.c b/src/opengl.c
index 3e12639..c83ce34 100644
--- a/src/opengl.c
+++ b/src/opengl.c
@@ -1043,11 +1043,10 @@ glx_blur_dst(session_t *ps, int dx, int dy, int width, int height, float z,
     glBindTexture(tex_tgt, tex_scr);
 
     if (!last_pass) {
-      static const GLenum DRAWBUFS[2] = { GL_COLOR_ATTACHMENT0 };
       glBindFramebuffer(GL_FRAMEBUFFER, fbo);
       glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
           GL_TEXTURE_2D, tex_scr2, 0);
-      glDrawBuffers(1, DRAWBUFS);
+      glDrawBuffer(GL_COLOR_ATTACHMENT0);
       if (glCheckFramebufferStatus(GL_FRAMEBUFFER)
           != GL_FRAMEBUFFER_COMPLETE) {
         log_error("Framebuffer attachment failed.");
@@ -1055,9 +1054,8 @@ glx_blur_dst(session_t *ps, int dx, int dy, int width, int height, float z,
       }
     }
     else {
-      static const GLenum DRAWBUFS[2] = { GL_BACK };
       glBindFramebuffer(GL_FRAMEBUFFER, 0);
-      glDrawBuffers(1, DRAWBUFS);
+      glDrawBuffer(GL_BACK);
       if (have_scissors)
         glEnable(GL_SCISSOR_TEST);
       if (have_stencil)