diff --git a/tests/Makefile b/tests/Makefile
index 2c4b8dc5ec65067f40dfe3cc2839dcc700c017b8..8d26736f1f1b9b11c546226a1609fec705583162 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -478,6 +478,7 @@ $(patsubst %, check-%, $(check-unit-y)): check-%: %
 
 $(patsubst %, check-report-qtest-%.xml, $(QTEST_TARGETS)): check-report-qtest-%.xml: $(check-qtest-y)
 	$(call quiet-command,QTEST_QEMU_BINARY=$*-softmmu/qemu-system-$* \
+		QTEST_QEMU_IMG=qemu-img$(EXESUF) \
 	  gtester -q $(GTESTER_OPTIONS) -o $@ -m=$(SPEED) $(check-qtest-$*-y),"GTESTER $@")
 
 check-report-unit.xml: $(check-unit-y)