fixed fuzzer multithreading tests
diff --git a/tests/Makefile b/tests/Makefile
index 83ebca9..42bc353 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -148,6 +148,7 @@
# $(CC) $(FLAGS) $(filter %.c,$^) -o $@$(EXT) -DZSTD_DLL_IMPORT=1 $(ZSTDDIR)/dll/libzstd.dll
$(CC) $(FLAGS) $(filter %.c,$^) -o $@$(EXT)
+fuzzer : CPPFLAGS += $(MULTITHREAD_CPP)
fuzzer : LDFLAGS += $(MULTITHREAD_LD)
fuzzer : $(ZSTDMT_OBJECTS)
fuzzer fuzzer32 : $(ZDICT_FILES) $(PRGDIR)/util.c $(PRGDIR)/timefn.c $(PRGDIR)/datagen.c fuzzer.c