1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 8aa5e98a..ec5e2cd0 100644
--- a/Makefile
+++ b/Makefile
@@ -94,7 +94,7 @@ BACKEND=\
   Unusedglob.v Unusedglobproof.v \
   Machregs.v Locations.v Conventions1.v Conventions.v LTL.v \
   ForwardMoves.v ForwardMovesproof.v \
-  FirstNop.v \
+  FirstNop.v FirstNopproof.v \
   Allnontrap.v Allnontrapproof.v \
   Allocation.v Allocproof.v \
   Tunneling.v Tunnelingproof.v \