diff --git a/src/Makefile.am b/src/Makefile.am
index 70a0ca89152..85038232f4a 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -933,7 +933,6 @@ libbitcoinkernel_la_SOURCES = \
   support/cleanse.cpp \
   support/lockedpool.cpp \
   sync.cpp \
-  threadinterrupt.cpp \
   txdb.cpp \
   txmempool.cpp \
   uint256.cpp \