diff --git a/Makefile.am b/Makefile.am
index 8cdd3ff647..c8af4228f3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -193,6 +193,8 @@ LCOV_FILTER_PATTERN = \
 	-p "src/secp256k1" \
 	-p "depends"
 
+DIR_FUZZ_SEED_CORPUS ?= qa-assets/fuzz_seed_corpus
+
 $(COV_TOOL_WRAPPER):
 	@echo 'exec $(COV_TOOL) "$$@"' > $(COV_TOOL_WRAPPER)
 	@chmod +x $(COV_TOOL_WRAPPER)
@@ -205,7 +207,7 @@ baseline_filtered.info: baseline.info
 	$(LCOV) -a $@ $(LCOV_OPTS) -o $@
 
 fuzz.info: baseline_filtered.info
-	@TIMEOUT=15 test/fuzz/test_runner.py qa-assets/fuzz_seed_corpus -l DEBUG
+	@TIMEOUT=15 test/fuzz/test_runner.py $(DIR_FUZZ_SEED_CORPUS) -l DEBUG
 	$(LCOV) -c $(LCOV_OPTS) -d $(abs_builddir)/src --t fuzz-tests -o $@
 	$(LCOV) -z $(LCOV_OPTS) -d $(abs_builddir)/src