1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index b8ef9343a..b35a11d53 100644
--- a/Makefile
+++ b/Makefile
@@ -622,7 +622,7 @@ ifneq ($(ABCEXTERNAL),)
 kernel/yosys.o: CXXFLAGS += -DABCEXTERNAL='"$(ABCEXTERNAL)"'
 endif
 endif
-OBJS += kernel/cellaigs.o kernel/celledges.o kernel/satgen.o kernel/mem.o
+OBJS += kernel/cellaigs.o kernel/celledges.o kernel/satgen.o kernel/mem.o kernel/ffmerge.o
 
 kernel/log.o: CXXFLAGS += -DYOSYS_SRC='"$(YOSYS_SRC)"'
 kernel/yosys.o: CXXFLAGS += -DYOSYS_DATDIR='"$(DATDIR)"' -DYOSYS_PROGRAM_PREFIX='"$(PROGRAM_PREFIX)"'