diff --git a/test/Makefile b/test/Makefile
index a314af12..1bae88be 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -309,6 +309,7 @@ mip_diabish: CC = gcc
 mip_diabish: CFLAGS += -std=gnu89 -Werror=declaration-after-statement -Werror=vla -Wno-pedantic
 mip_diabish: mip_test
 
+mip_vc98: MDASH = 0
 mip_vc98: mip_test.c mongoose.c mongoose.h packed_fs.c Makefile
 	$(DOCKER) mdashnet/vc98 wine cl mip_test.c packed_fs.c $(VCFLAGS) $(DEFS) $(TFLAGS) /Fe$@.exe
 	$(DOCKER) -e WINEPREFIX=/tmp/wineprefix mdashnet/vc98 wine $@.exe
diff --git a/test/mip_x_test.c b/test/mip_x_test.c
index f8268209..2a18bb32 100644
--- a/test/mip_x_test.c
+++ b/test/mip_x_test.c
@@ -593,6 +593,7 @@ bool mip_x_test(struct mg_mgr *mgr) {
 
   // Clear
   s_error = false;
+  mg_mgr_poll(mgr, 0); // prevent mDash from trashing mg_mgr_free()
   mg_mgr_free(mgr);
   ASSERT(mgr->conns == NULL);  // Deconstruction OK
   printf("HEALTH_DASHBOARD\t\"cleanup\": %s\n", s_error ? "false":"true");