diff --git a/src/Makefile.am b/src/Makefile.am
index bf4dcf8996..5c93cbf00d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1018,7 +1018,10 @@ if BUILD_BITCOIN_LIBS
 lib_LTLIBRARIES += $(LIBBITCOINCONSENSUS)
 
 include_HEADERS = script/bitcoinconsensus.h
-libbitcoinconsensus_la_SOURCES = $(crypto_libbitcoin_crypto_base_la_SOURCES) $(libbitcoin_consensus_a_SOURCES)
+libbitcoinconsensus_la_SOURCES = \
+  util/strencodings.cpp \
+  $(crypto_libbitcoin_crypto_base_la_SOURCES) \
+  $(libbitcoin_consensus_a_SOURCES)
 
 libbitcoinconsensus_la_LDFLAGS = $(AM_LDFLAGS) -no-undefined $(RELDFLAGS)
 libbitcoinconsensus_la_LIBADD = $(LIBSECP256K1)