diff --git a/tests/unit/Makefile.gcov.inc b/tests/unit/Makefile.gcov.inc
index d484ea846..b5ddb7431 100644
--- a/tests/unit/Makefile.gcov.inc
+++ b/tests/unit/Makefile.gcov.inc
@@ -26,7 +26,7 @@ COVERAGE_OBJS = $(LIB_OBJS) $(SRC_OBJS)
 GCDAS = $(COVERAGE_OBJS:.o=.gcda)
 GCNOS = $(COVERAGE_OBJS:.o=.gcno)
 
-GCOVR_OPTS = --exclude ^include --root $(SRCDIR) --sort-percentage --print-summary
+GCOVR_OPTS = --exclude $(SRCDIR)/include --root $(SRCDIR) --sort-percentage --print-summary
 
 coverage: $(BUILDDIR)/coverage/index.html $(BUILDDIR)/coverage.xml $(BUILDDIR)/coverage.txt
 
@@ -53,4 +53,4 @@ clean-coverage:
 install-coverage:
 
 .INTERMEDIATE: $(addsuffix .gcdas,$(COVERAGE_TESTS))
-.PHONY: coverage gcda clean-coverage install-coverage
\ No newline at end of file
+.PHONY: coverage gcda clean-coverage install-coverage