diff --git a/drops.spec b/drops.spec
index 36fda83..7caddea 100644
--- a/drops.spec
+++ b/drops.spec
@@ -41,7 +41,7 @@ A p2p transport network for opmsg end2end encrypted messages.
 
 %build
 pushd src
-make %{?_smp_mflags}
+make %{?_smp_mflags} INC=%optflags
 
 %install
 pushd src