diff --git a/Makefile.am b/Makefile.am
index 0e08794c1..687d896f6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -47,10 +47,12 @@ cov-reset: cov-reset-common
 
 cov-report:
 		@mkdir $(top_builddir)/coverage
-		lcov -c -o $(top_builddir)/coverage/coverage.info -d $(top_builddir)
+		lcov -c -o $(top_builddir)/coverage/coverage.info -d $(top_builddir) \
+			 --rc lcov_branch_coverage=1
 		lcov -r $(top_builddir)/coverage/coverage.info '*/tests/*' \
-			 -o $(top_builddir)/coverage/coverage.cleaned.info
-		genhtml --num-spaces 4 --legend \
+			 -o $(top_builddir)/coverage/coverage.cleaned.info \
+			 --rc lcov_branch_coverage=1
+		genhtml --num-spaces 4 --legend --branch-coverage \
 				-t "$(PACKAGE_STRING)" \
 				-o $(top_builddir)/coverage/html \
 				-p `readlink -m $(abs_top_srcdir)`/src \