diff --git a/build/toolchain.android.mak b/build/toolchain.android.mak
index ce2858a54..f24462a72 100644
--- a/build/toolchain.android.mak
+++ b/build/toolchain.android.mak
@@ -1,4 +1,5 @@
-NDK_PATH ?= /usr/local/android/ndk-bundle
+ANDROID_HOME ?= /usr/local/android
+NDK_PATH ?= $(ANDROID_HOME)/ndk-bundle
 
 ifeq ($(HOST),macos)
 NDK_HOST_TAG ?= darwin-x86_64
diff --git a/ion/src/simulator/android/Makefile b/ion/src/simulator/android/Makefile
index 703a77e77..04d8dad46 100644
--- a/ion/src/simulator/android/Makefile
+++ b/ion/src/simulator/android/Makefile
@@ -54,7 +54,7 @@ epsilon_apk_deps += $(addprefix $(BUILD_DIR)/app/res/,mipmap/ic_launcher.png mip
 .PHONY: gradle_%
 gradle_%: $(epsilon_apk_deps)
 	@echo "GRADLE ion/src/simulator/android/build.gradle"
-	$(Q) ANDROID_HOME=/usr/local/android EPSILON_VERSION=$(EPSILON_VERSION) BUILD_DIR=$(BUILD_DIR) ion/src/simulator/android/gradlew -b ion/src/simulator/android/build.gradle $*
+	$(Q) ANDROID_HOME=$(ANDROID_HOME) EPSILON_VERSION=$(EPSILON_VERSION) BUILD_DIR=$(BUILD_DIR) ion/src/simulator/android/gradlew -b ion/src/simulator/android/build.gradle $*
 
 DEFAULT = epsilon.apk