diff --git a/Makefile b/Makefile
index 430bbad055..b5a7377cb1 100644
--- a/Makefile
+++ b/Makefile
@@ -1059,7 +1059,7 @@ $(MANUAL_BUILDDIR)/system/index.html: $(call manual-deps,system)
 $(call define-manpage-rule,interop,\
        qemu-ga.8 qemu-img.1 qemu-nbd.8 qemu-trace-stap.1\
        virtiofsd.1 virtfs-proxy-helper.1,\
-       $(SRC_PATH/qemu-img-cmds.hx))
+       $(SRC_PATH)/qemu-img-cmds.hx)
 
 $(call define-manpage-rule,system,qemu-block-drivers.7)