diff --git a/test/tap/tests/unit/Makefile b/test/tap/tests/unit/Makefile
index 71bc459ff..9e2b9f2c4 100644
--- a/test/tap/tests/unit/Makefile
+++ b/test/tap/tests/unit/Makefile
@@ -320,12 +320,12 @@ $(ODIR)/tap_noise_stubs.o: | $(ODIR)
 ezoption_parser_unit-t: ezoption_parser_unit-t.cpp $(ODIR)/tap.o $(ODIR)/tap_noise_stubs.o
 	$(CXX) $< $(ODIR)/tap.o $(ODIR)/tap_noise_stubs.o \
 		-I$(TAP_IDIR) -I$(PROXYSQL_PATH)/include \
-		$(STDCPP) -O0 -ggdb $(WGCOV) $(LWGCOV) -lpthread -o $@
+		$(STDCPP) -O0 -ggdb $(WGCOV) $(LWGCOV) $(WASAN) -lpthread -o $@
 
 mysql_resolution_unit-t: mysql_resolution_unit-t.cpp $(ODIR)/tap.o $(ODIR)/tap_noise_stubs.o
 	$(CXX) $< $(ODIR)/tap.o $(ODIR)/tap_noise_stubs.o \
 		-I$(TAP_IDIR) -I$(PROXYSQL_PATH)/include \
-		$(STDCPP) -O0 -ggdb $(WGCOV) $(LWGCOV) -lpthread -o $@
+		$(STDCPP) -O0 -ggdb $(WGCOV) $(LWGCOV) $(WASAN) -lpthread -o $@
 
 # Pattern rule: all unit tests use the same compile + link flags.
 # Each test binary is built from its .cpp source, linked against