diff --git a/tests/tests-c-compiler/Makefile.am b/tests/tests-c-compiler/Makefile.am
index db0497c..83508e5 100644
--- a/tests/tests-c-compiler/Makefile.am
+++ b/tests/tests-c-compiler/Makefile.am
@@ -14,6 +14,7 @@
 				   CFLAGS="${TESTSUITE_CFLAGS} ${CFLAGS}" \
 				   CXXFLAGS="${CXXFLAGS}" \
 				   LDFLAGS="${LDFLAGS}" \
+				   LIBFUZZER_CFLAGS="${LIBFUZZER_CFLAGS}" \
 				   srcdir=${srcdir} \
 				   abs_top_srcdir=${abs_top_srcdir} \
 				   abs_top_builddir=${abs_top_builddir} \