diff --git a/rspy/Makefile b/rspy/Makefile
index 48ec80798..5eb9ea8fd 100644
--- a/rspy/Makefile
+++ b/rspy/Makefile
@@ -43,7 +43,8 @@ QT_FTL_LOCALES := ../qt/ftl/repo/desktop
 
 BUILD_VARIABLES = FTL_TEMPLATE_DIRS="$(QT_FTL_TEMPLATES)" \
 	FTL_LOCALE_DIRS="$(QT_FTL_LOCALES)" \
-	CARGO_TARGET_DIR="$(RSPY_TARGET_DIR)"
+	CARGO_TARGET_DIR="$(RSPY_TARGET_DIR)" \
+	MACOSX_DEPLOYMENT_TARGET=10.7
 
 .PHONY: all develop build check fix clean