diff --git a/Makefile b/Makefile
index 9317bea509..84d4859bb3 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,7 @@ else
   TOUCH := touch
   RM := rm -rf
   CMAKE := $(shell (command -v cmake3 || echo cmake))
-  CMAKE_GENERATOR ?= $(shell (command -v ninja > /dev/null 2>&1 && echo "Ninja") || echo "Unix Makefiles")
+  CMAKE_GENERATOR ?= "$(shell (command -v ninja > /dev/null 2>&1 && echo "Ninja") || echo "Unix Makefiles")"
   define rmdir
     rm -rf $1
   endef