diff --git a/vertex-attribute.c b/vertex-attribute.c
index 79cfa4d..1e04d8a 100644
--- a/vertex-attribute.c
+++ b/vertex-attribute.c
@@ -135,6 +135,18 @@ vertex_attribute_enable( vertex_attribute_t *attr )
         }
     }
     glEnableVertexAttribArray( attr->index );
-    glVertexAttribPointer( attr->index, attr->size, attr->type,
-                           attr->normalized, attr->stride, attr->pointer );
+    switch (attr->type) {
+    case GL_UNSIGNED_SHORT:
+    case GL_UNSIGNED_INT:
+    case GL_UNSIGNED_BYTE:
+    case GL_SHORT:
+    case GL_INT:
+    case GL_BYTE:
+        glVertexAttribIPointer(attr->index, attr->size, attr->type,
+            attr->stride, attr->pointer);
+        break;
+    default:
+        glVertexAttribPointer(attr->index, attr->size, attr->type,
+            attr->normalized, attr->stride, attr->pointer);
+    }
 }