diff --git a/Makefile.am b/Makefile.am
--- a/Makefile.am
+++ b/Makefile.am
@@ -175,7 +175,7 @@
 	$(MAKE) -C src $(@F)
 
 if USE_LCOV
-LCOV_FILTER_PATTERN=-p "/usr/include/" -p "src/leveldb/" -p "src/bench/" -p "src/univalue" -p "src/crypto/ctaes" -p "src/secp256k1"
+LCOV_FILTER_PATTERN=-p "/usr/include/" -p "/usr/lib/" -p "src/leveldb/" -p "src/bench/" -p "src/univalue" -p "src/crypto/ctaes" -p "src/secp256k1"
 
 baseline.info:
 	$(LCOV) -c -i -d $(abs_builddir)/src -o $@