diff --git a/src/mesa/main/draw.c b/src/mesa/main/draw.c
index 8349243ab41..af9e282938b 100644
--- a/src/mesa/main/draw.c
+++ b/src/mesa/main/draw.c
@@ -1642,7 +1642,7 @@ _mesa_validated_drawrangeelements(struct gl_context *ctx,
          _mesa_warning(ctx, "Invalid indices offset 0x%" PRIxPTR
                             " (indices buffer size is %ld bytes)"
                             " or unallocated buffer (%u). Draw skipped.",
-                            start, index_bo->Size, !!index_bo->buffer);
+                            start, (long)index_bo->Size, !!index_bo->buffer);
          return;
       }