diff --git a/shaders.cpp b/shaders.cpp
index 37d3d0b6..6e45d65c 100644
--- a/shaders.cpp
+++ b/shaders.cpp
@@ -718,7 +718,7 @@ void vertices(const vector<glvertex>& v, int vshift = 0) {
   #if CAP_SHADER
   glVertexAttribPointer(aPosition, SHDIM, GL_FLOAT, GL_FALSE, sizeof(glvertex), &v[vshift]);
   #else
-  glVertexPointer(3, GL_FLOAT, sizeof(glvertex), &v[0]);
+  glVertexPointer(SHDIM, GL_FLOAT, sizeof(glvertex), &v[0]);
   #endif
   #endif
   }